Christian Sidor

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Christian Alfred Sidor is an American vertebrate paleontologist. He is currently a Professor in the Department of Biology, University of Washington in Seattle, [1] as well as Curator of Vertebrate Paleontology and Associate Director for Research and Collections at the Burke Museum of Natural History and Culture. [2] His research focuses on Permian and Triassic tetrapod evolution, especially on therapsids.

Contents

Academic and professional background

Sidor received a B.S. (with honors) in biology from Trinity College in 1994. He went on to pursue his graduate studies at the University of Chicago, completing his M.S. in 1996 and his Ph.D. in 2000 under the supervision of James Hopson. [3] Sidor won the Romer Prize in 2001 for his doctoral work, [4] a competitive annual award at the Society of Vertebrate Paleontology annual meeting for the best predoctoral student oral presentation. [5] Following his dissertation, Sidor held a postdoctoral fellowship at the National Museum of Natural History (2001) before becoming an Assistant Professor in Anatomy at the New York College of Osteopathic Medicine. [6] He held that position until 2005, when he took up a position as an Assistant Professor in Biology at the University of Washington. Presently, he is a full Professor in Biology at the University of Washington, as well as a Curator of Vertebrate Paleontology and Associate Director for Research and Collections at the affiliated Burke Museum. He is a research associate at the Field Museum of Natural History, National Museum of Natural History, and Evolutionary Studies Institute (University of the Witwatersrand).

Academic contributions

Sidor is best known for his work on therapsid synapsids; [7] [8] [9] [10] [11] [12] the title of his dissertation was "Evolutionary trends and relationships within the Synapsida." [13] However, Sidor has been involved with research on a diverse array of other Paleozoic and Mesozoic tetrapod clades, including temnospondyl amphibians; [14] [15] [16] captorhinid reptiles; [17] [18] pseudosuchian archosaurs; [19] [20] [21] and avemetatarsalian archosaurs, [22] [23] [24] [25] [26] [27] encompassing a wide-ranging research program focusing on descriptive anatomy, taxonomy and phylogenetics, histology and pathology, trends in biogeography, and responses of tetrapods to major climatic perturbations. Sidor has extensive experience collecting and researching fossils from historically less well-sampled geographic regions, including Niger, [28] Tanzania, [29] Zambia, [30] and Antarctica. [31] Previously he was a member of the editorial board of the Journal of Vertebrate Paleontology (2005-2010).

Below is a list of new taxa that Sidor has contributed to naming:

YearTaxonAuthors
2019 Ancistronychus paradoxus gen. et sp. nov.Gonçalves & Sidor [32]
2019 Laosuchus naga gen. et sp. nov.Arbez, Sidor & Steyer [33]
2019 Antarctanax shackletoni gen. et sp. nov.Peecook, Smith & Sidor [34]
2017 Teleocrater rhadinus gen. et sp. nov.Nesbitt et al. [27]
2016 Wantulignathus gwembensis gen. et sp. novWhitney & Sidor [35]
2016 Mupashi migrator gen. et sp. nov.Huttenlocker & Sidor [36]
2015 Opisthodontosaurus carrolli gen. et sp. nov.Reisz, LeBlanc, Sidor, Scott & May [18]
2015 Ichibengops munyamadziensis gen. et sp. nov.Huttenlocker & Sidor [37]
2014 Abajudon kaayai gen. et sp. nov.Angielczyk et al. [38]
2014 Nundasuchus songeaensis gen. et sp. nov.Nesbitt, Sidor, Angielczyk, Smith & Tsuji [25]
2014 Antarctosuchus polyodon gen. et sp. nov.Sidor, Steyer & Hammer [39]
2013 Lutungutali sitwensis gen. et sp. nov.Peecook, Sidor, Nesbitt, Smith, Steyer & Angielczyk [40]
2013 Nyasasaurus parringtoni gen. et sp. nov.Nesbitt, Barrett, Werning, Sidor & Charig [23]
2010 Asilisaurus kongwe gen. et sp. nov.Nesbitt, Sidor, Irmis, Angielczyk, Smith & Tsuji [22]
2010 Kombuisia antarctica sp. nov.Fröbisch, Angielczyk & Sidor [41]
2008 Kryostega collinsoni gen. et sp. nov.Sidor, Damiani & Hammer [15]
2007 Lophorhinus willodenensis gen. et sp. nov.Sidor & Smith [42]
2006 Pachydectes elsi gen. et sp. nov.Rubidge, Modesto & Sidor [43]
2006 Paraburnetia sneeubergensis gen. et sp. nov.Smith, Rubidge & Sidor [44]
2006 Elliotherium kersteni gen. et sp. nov.Sidor & Hancox [45]
2006 Herpetoskylax hopsoni gen. et sp. nov.Sidor & Rubidge [46]
2005 Saharastega moradiensis gen. et sp. novSidor et al. [14]
2005 Nigerpeton ricqlesi gen. et sp. nov.Sidor et al. [14]
2004 Lobalopex mordax gen. et sp. nov.Sidor, Hopson & Keyser [47]
2004 Progalesaurus lootsbergensis gen. et sp. nov.Sidor & Smith [48]
2003 Anatosuchus minor gen. et sp. nov.Sereno, Sidor, Larsson & Gado [21]
1998 Suchomimus tenerensis gen. et sp. nov.Sereno et al. [49]
1996 Deltadromeus agilis gen. et sp. nov.Sereno et al. [50]

Related Research Articles

<span class="mw-page-title-main">Cynodont</span> Clade of therapsids

Cynodonts are eutheriodont therapsids belonging to the clade Cynodontia that first appeared in the Late Permian, and extensively diversified after the Permian–Triassic extinction event. Cynodonts occupied a variety of ecological niches, both as carnivores and as herbivores. Mammals are cynodonts, as are their extinct ancestors and close relatives (Mammaliaformes), having evolved from advanced probainognathian cynodonts during the Late Triassic. All other cynodont lines went extinct, with the last known non-mammaliaform cynodont group, the Tritylodontidae, having its youngest records in the Early Cretaceous.

<span class="mw-page-title-main">Dicynodont</span> Extinct clade of therapsids

Dicynodontia is an extinct clade of anomodonts, an extinct type of non-mammalian therapsid. Dicynodonts were herbivores that typically bore a pair of tusks, hence their name, which means 'two dog tooth'. Members of the group possessed a horny, typically toothless beak, unique amongst all synapsids. Dicynodonts first appeared in Southern Pangaea during the mid-Permian, ca. 270–260 million years ago, and became globally distributed and the dominant herbivorous animals in the Late Permian, ca. 260–252 Mya. They were devastated by the end-Permian Extinction that wiped out most other therapsids ca. 252 Mya. They rebounded during the Triassic but died out towards the end of that period. They were the most successful and diverse of the non-mammalian therapsids, with over 70 genera known, varying from rat-sized burrowers to elephant-sized browsers.

<span class="mw-page-title-main">Biarmosuchia</span> Extinct suborder of therapsids

Biarmosuchia is an extinct clade of non-mammalian synapsids from the Permian. Biarmosuchians are the most basal group of the therapsids. They were moderately-sized, lightly built carnivores, intermediate in form between basal sphenacodont "pelycosaurs" and more advanced therapsids. Biarmosuchians were rare components of Permian ecosystems, and the majority of species belong to the clade Burnetiamorpha, which are characterized by elaborate cranial ornamentation.

<i>Tapinocephalus</i> Assemblage Zone

The Tapinocephalus Assemblage Zone is a tetrapod assemblage zone or biozone which correlates to the middle Abrahamskraal Formation, Adelaide Subgroup of the Beaufort Group, a fossiliferous and geologically important geological Group of the Karoo Supergroup in South Africa. The thickest outcrops, reaching approximately 2,000 metres (6,600 ft), occur from Merweville and Leeu-Gamka in its southernmost exposures, from Sutherland through to Beaufort West where outcrops start to only be found in the south-east, north of Oudshoorn and Willowmore, reaching up to areas south of Graaff-Reinet. Its northernmost exposures occur around the towns Fraserburg and Victoria West. The Tapinocephalus Assemblage Zone is the second biozone of the Beaufort Group.

<i>Daptocephalus</i> Assemblage Zone

The Daptocephalus Assemblage Zone is a tetrapod assemblage zone or biozone found in the Adelaide Subgroup of the Beaufort Group, a majorly fossiliferous and geologically important geological Group of the Karoo Supergroup in South Africa. This biozone has outcrops located in the upper Teekloof Formation west of 24°E, the majority of the Balfour Formation east of 24°E, and the Normandien Formation in the north. It has numerous localities which are spread out from Colesberg in the Northern Cape, Graaff-Reniet to Mthatha in the Eastern Cape, and from Bloemfontein to Harrismith in the Free State. The Daptocephalus Assemblage Zone is one of eight biozones found in the Beaufort Group and is considered Late Permian (Lopingian) in age. Its contact with the overlying Lystrosaurus Assemblage Zone marks the Permian-Triassic boundary.

The Fremouw Formation is a Triassic-age rock formation in the Transantarctic Mountains of Antarctica. It contains the oldest known fossils of tetrapods from Antarctica, including synapsids, reptiles and amphibians. Fossilized trees have also been found. The formation's beds were deposited along the banks of rivers and on floodplains. During the Triassic, the area would have been a riparian forest at 70–75°S latitude.

<i>Burnetia</i> Extinct genus of therapsids

Burnetia is an extinct genus of biarmosuchian therapsids in the family Burnetiidae, from the Late Permian of South Africa. Burnetia is known so far from a single holotype skull lacking the lower jaws described by South African paleontologist Robert Broom in 1923. Due to erosion and dorsoventral crushing, features of the skull are hard to interpret. Stutural lines are further distorted by the unusual shape of the skull roof, including many bosses and protuberances.

Sangusaurus is an extinct genus of large dicynodont synapsid with two recognized species: S. edentatus and S. parringtonii. Sangusaurus is named after the Sangu stream in eastern Zambia near to where it was first discovered + ‘saur’ which is the Greek root for lizard. Sangusaurus fossils have been recovered from the upper parts of the Ntawere Formation in Zambia and of the Lifua Member of the Manda Beds in Tanzania. The earliest study considered Sangusaurus a kannemeyeriid dicynodont, but more recent phylogenetic analyses place Sangusaurus within the stahleckeriid clade of Dicynodontia. Until recently, little work had been done to describe Sangusaurus, likely due to the fact that only four incomplete fossil specimens have been discovered.

<i>Tetragonias</i> Extinct genus of dicynodonts

Tetragonias is an extinct genus of dicynodont from the Anisian Manda Beds of Tanzania. With tetra meaning “four,” and goni meaning “angle,” the name references the square shape of the Tetragonias skull when viewed dorsally. Not to be confused with the plant Tetragonia,Tetragonias were dicynodont anomodonts discovered in the late 1960s by paleontologist A. R. I. Cruickshank in the Manda Formation. Only the type species, T. njalilus, has been recognized.

<span class="mw-page-title-main">Lystrosauridae</span> Extinct family of dicynodonts

Lystrosauridae is a family of dicynodont therapsids from the Permian and Triassic time periods. It includes two genera, Lystrosaurus and Kwazulusaurus. Kwazulusaurus includes a single species, K. shakai, from the Late Permian of South Africa and Lystrosaurus includes many species from the Late Permian and Early Triassic of South Africa, India, and Antarctica.

<span class="mw-page-title-main">Abrahamskraal Formation</span> Geological formation of the Beaufort Group in South Africa

The Abrahamskraal Formation is a geological formation and is found in numerous localities in the Northern Cape, Western Cape, and the Eastern Cape of South Africa. It is the lowermost formation of the Adelaide Subgroup of the Beaufort Group, a major geological group that forms part of the greater Karoo Supergroup. It represents the first fully terrestrial geological deposits of the Karoo Basin. Outcrops of the Abrahamskraal Formation are found from the small town Middelpos in its westernmost localities, then around Sutherland, the Moordenaarskaroo north of Laingsburg, Williston, Fraserburg, Leeu-Gamka, Loxton, and Victoria West in the Western Cape and Northern Cape. In the Eastern Cape outcrops are known from Rietbron, north of Klipplaat and Grahamstown, and also southwest of East London.

Syops is an extinct genus of dicynodont therapsid. The type species S. vanhoepeni was first named in 1938 as Dicynodon vanhoepeni. Fossils of the genus have been found in the Cistecephalus Assemblage Zone in the Usili Formation of the Ruhuhu Basin, Tanzania and the Upper Madumabisa Mudstone Formation of the Luangwa Basin, Zambia. Its phylogenetic placement is somewhat uncertain, with multiple different studies finding it as either a basal geikiid, rhachiocephalid a dicynodontoid more derived than the most basal genera but less derived than Lystrosauridae, or a lystrosaurid.

<span class="mw-page-title-main">Manda Formation</span>

The Manda Formation is a Middle Triassic (Anisian?) or possibly Late Triassic (Carnian?) geologic formation in Tanzania. It preserves fossils of many terrestrial vertebrates from the Triassic, including some of the earliest dinosauromorph archosaurs. The formation is often considered to be Anisian in age according to general tetrapod biochronology hypotheses and correlations to the Cynognathus Assemblage Zone of South Africa. However, some recent studies cast doubt to this age, suggesting that parts deposits may actually be younger (Carnian) in age.

<i>Jimusaria</i> Extinct genus of dicynodonts

Jimusaria is an extinct genus of dicynodont therapsid from the Late Permian (Changhsingian) of China. The type species J. sinkianensis from the Guodikeng Formation in Xinjiang, was originally named as a species of Dicynodon, the first from Asia, but was given its own genus in 1963 before being sunk back into Dicynodon in 1988. The genus was resurrected in 2011 by palaeontologist Christian Kammerer in a taxonomic revision of the genus Dicynodon. Jimusaria was a mid-sized dicynodont, and was similar in appearance to the South African Dicynodon, but differed from it in features such as its narrower snout. A second species, Jimusaria monanensis was described from the Naobaogou Formation of northern China in 2023.

<i>Turfanodon</i> Extinct genus of dicynodonts

Turfanodon is an extinct genus of dicynodont therapsid from the Late Permian Sunan, Guodikeng, and Naobaogou Formations of China. The holotype of T. bogdaensis was discovered between 1963-1964 and was originally named in 1973 by A. Sun with the type species Turfanodon bogdaensis, Turfanodon was reclassified as a junior synonym of the related Dicynodon in 1988 by G. M. King. T. bogdaensis remained a species of Dicynodon for over two decades before the genus was reinstated in 2011 in a revision of the taxonomy of Dicynodon by palaeontologist Christian Kammerer. A second species from Inner Mongolia, T. jiufengensis, was named in 2021 by palaeontologist Jun Liu from a nearly complete skeleton and other referred bones. Turfanodon was a relatively large dicynodont, and similar in appearance to the related Daptocephalus from South Africa.

<span class="mw-page-title-main">Usili Formation</span> Geologic formation in Tanzania

The Usili Formation is a Late Permian geologic formation in Tanzania. It preserves fossils of many terrestrial vertebrates from the Permian, including temnospondyls, pareiasaurs, therapsids and the archosauromorph Aenigmastropheus.

<i>Leucocephalus</i> Extinct genus of therapsids

Leucocephalus is a genus of biarmosuchian belonging to the family Burnetiidae dating to the Wuchiapingian. It was found in the Tropidostoma Assemblage Zone of the Main Karoo Basin of South Africa. It is a monotypic taxon which contains one only species, Leucocephalus wewersi. The genus name Leucocephalus is derived from Greek. Leucos, meaning white; kephalos, meaning skull, as the Leucocephalus skull discovered was unusually pale. The species epithet wewersi comes from the farm employee who found the skull, Klaus ‘Klaasie’ Wewers.

The Moradi Formation is a geological formation in Niger. It is of Late Permian age. It is informally divided into three subunits. The lower portion of the formation consists of red mudstone, with muddy calcareous sandstone and quartz-granlule conglomerate present as lenses. The middle portion consists of muddy siltstone in thick beds interbedded with red argillaceous sandstone. The lower two thirds of the upper portion of the formation consist of red siltstone intercalated with channel lag intraformational conglomerates, while the upper third consists of barchanoid shaped lenses of conglomeratic sandstone with ventifacts. These facies are indicatived of deposition under arid conditions, with less than 300 millimetres (12 in) of annual rainfall in the Central Pangean desert, with annual temperatures of 30 to 35 °C, but with ephemeral water presence including lakes.

Isalo II, also known as the Makay Formation, is an informal Triassic geological unit in Madagascar.

References

  1. ↑ "Christian Sidor | UW Biology". www.biology.washington.edu. Retrieved 2020-07-10.
  2. ↑ "Leadership". Burke Museum. Retrieved 2020-07-10.
  3. ↑ "Chris Sidor".
  4. ↑ "SVP - Past Award Winners". Archived from the original on 2019-03-17. Retrieved 2020-07-09.
  5. ↑ "SVP - Romer Prize" . Retrieved 2020-07-09.
  6. ↑ "Christian A. Sidor". ResearchGate.
  7. ↑ Rubidge, Bruce S.; Sidor, Christian A. (2001). "Evolutionary Patterns Among Permo-Triassic Therapsids". Annual Review of Ecology and Systematics. 32 (1): 449–480. doi:10.1146/annurev.ecolsys.32.081501.114113. ISSN   0066-4162.
  8. ↑ Sidor, Christian A.; Hopson, James A. (1998). "Ghost Lineages and "Mammalness": Assessing the Temporal Pattern of Character Acquisition in the Synapsida". Paleobiology. 24 (2): 254–273. doi:10.1666/0094-8373(1998)024[0254:GLAATT]2.3.CO;2. ISSN   0094-8373. JSTOR   2401242. S2CID   83773704.
  9. ↑ Sidor, Christian A. (2001). "Simplification as a Trend in Synapsid Cranial Evolution". Evolution. 55 (7): 1419–1442. doi:10.1111/j.0014-3820.2001.tb00663.x. ISSN   0014-3820. PMID   11525465. S2CID   20339164.
  10. ↑ Sidor, Christian A.; Hopson, James A. (2017-11-29). "Cricodon metabolus(Cynodontia: Gomphodontia) from the Triassic Ntawere Formation of northeastern Zambia: patterns of tooth replacement and a systematic review of the Trirachodontidae". Journal of Vertebrate Paleontology. 37 (sup1): 39–64. Bibcode:2017JVPal..37S..39S. doi:10.1080/02724634.2017.1410485. ISSN   0272-4634. S2CID   89932366.
  11. ↑ Kato, Kyle M.; Rega, Elizabeth A.; Sidor, Christian A.; Huttenlocker, Adam K. (2020-01-13). "Investigation of a bone lesion in a gorgonopsian (Synapsida) from the Permian of Zambia and periosteal reactions in fossil non-mammalian tetrapods". Philosophical Transactions of the Royal Society B: Biological Sciences. 375 (1793): 20190144. doi: 10.1098/rstb.2019.0144 . ISSN   0962-8436. PMC   7017433 . PMID   31928188.
  12. ↑ Kulik, Zoe T.; Sidor, Christian A. (2019-05-09). "The original boneheads: histologic analysis of the pachyostotic skull roof in Permian burnetiamorphs (Therapsida: Biarmosuchia)". Journal of Anatomy. 235 (1): 151–166. doi:10.1111/joa.12987. ISSN   0021-8782. PMC   6580075 . PMID   31070781.
  13. ↑ Sidor, Christian A. (2000). Evolutionary trends and relationships within the Synapsida [Ph.D. thesis]. Chicago: University of Chicago.
  14. 1 2 3 Sidor, Christian A.; O'Keefe, F. Robin; Damiani, Ross; Steyer, J. Sébastien; Smith, Roger M. H.; Larsson, Hans C. E.; Sereno, Paul C.; Ide, Oumarou; Maga, Abdoulaye (2005). "Permian tetrapods from the Sahara show climate-controlled endemism in Pangaea" (PDF). Nature. 434 (7035): 886–889. Bibcode:2005Natur.434..886S. doi:10.1038/nature03393. ISSN   0028-0836. PMID   15829962. S2CID   4416647.
  15. 1 2 Sidor, Christian A.; Damiani, Ross; Hammer, William R. (2008-09-12). "A new Triassic temnospondyl from Antarctica and a review of Fremouw Formation biostratigraphy". Journal of Vertebrate Paleontology. 28 (3): 656–663. doi:10.1671/0272-4634(2008)28[656:anttfa]2.0.co;2. ISSN   0272-4634. S2CID   131582010.
  16. ↑ Sidor, Christian A.; Steyer, J. Sébastien; Damiani, Ross (2007-03-12). "Parotosuchus(Temnospondyli: Mastodonsauridae) from the Triassic of Antarctica". Journal of Vertebrate Paleontology. 27 (1): 232–235. doi:10.1671/0272-4634(2007)27[232:ptmftt]2.0.co;2. ISSN   0272-4634. S2CID   85650753.
  17. ↑ O'Keefe, F. Robin; Sidor, Christian A.; Larsson, Hans C. E.; Maga, Abdoulaye; Ide, Oumarou (2005-06-27). "The vertebrate fauna of the Upper Permian of Niger—III, morphology and ontogeny of the hindlimb ofMoradisaurus grandis(Reptilia, Captorhinidae)". Journal of Vertebrate Paleontology. 25 (2): 309–319. doi:10.1671/0272-4634(2005)025[0309:tvfotu]2.0.co;2. ISSN   0272-4634. S2CID   13645651.
  18. 1 2 Reisz, R. R.; LeBlanc, Aaron R. H.; Sidor, Christian A.; Scott, Diane; May, William (2015-08-20). "A new captorhinid reptile from the Lower Permian of Oklahoma showing remarkable dental and mandibular convergence with microsaurian tetrapods". The Science of Nature. 102 (9–10): 50. Bibcode:2015SciNa.102...50R. doi:10.1007/s00114-015-1299-y. ISSN   0028-1042. PMID   26289932. S2CID   17161972.
  19. ↑ Sereno, P. C. (2001-10-25). "The Giant Crocodyliform Sarcosuchus from the Cretaceous of Africa" (PDF). Science. 294 (5546): 1516–1519. Bibcode:2001Sci...294.1516S. doi:10.1126/science.1066521. ISSN   0036-8075. PMID   11679634. S2CID   22956704.
  20. ↑ Nesbitt, Sterling J.; Stocker, Michelle R.; Parker, William G.; Wood, Thomas A.; Sidor, Christian A.; Angielczyk, Kenneth D. (2017-11-29). "The braincase and endocast ofParringtonia gracilis, a Middle Triassic suchian (Archosaur: Pseudosuchia)". Journal of Vertebrate Paleontology. 37 (sup1): 122–141. Bibcode:2017JVPal..37S.122N. doi:10.1080/02724634.2017.1393431. ISSN   0272-4634. S2CID   89657063.
  21. 1 2 Sereno, P. C.; Sidor, C. A.; Larsson, H. C. E.; Gado, B. (2003-06-17). "A new notosuchian from the Early Cretaceous of Niger". Journal of Vertebrate Paleontology. 23 (2): 477–482. doi:10.1671/0272-4634(2003)023[0477:ANNFTE]2.0.CO;2. ISSN   0272-4634. S2CID   86329307.
  22. 1 2 Nesbitt, Sterling J.; Sidor, Christian A.; Irmis, Randall B.; Angielczyk, Kenneth D.; Smith, Roger M. H.; Tsuji, Linda A. (2010). "Ecologically distinct dinosaurian sister group shows early diversification of Ornithodira". Nature. 464 (7285): 95–98. Bibcode:2010Natur.464...95N. doi:10.1038/nature08718. ISSN   0028-0836. PMID   20203608. S2CID   4344048.
  23. 1 2 Nesbitt, S. J.; Barrett, P. M.; Werning, S.; Sidor, C. A.; Charig, A. J. (2012-12-05). "The oldest dinosaur? A Middle Triassic dinosauriform from Tanzania". Biology Letters. 9 (1): 20120949. doi: 10.1098/rsbl.2012.0949 . ISSN   1744-9561. PMC   3565515 . PMID   23221875.
  24. ↑ Peecook, R; Sidor, A; Nesbitt, J; Smith, M; Steyer, S; Anigelczyck, D (2014). "A New Silesaurid from the Upper Ntawere Formation of Zambia (Middle Triassic) Demonstrates the Rapid Diversification of Silesauridae (Avemetatarsalia, Dinosauriformes) (project)". doi:10.7934/p1046.{{cite journal}}: Cite journal requires |journal= (help)
  25. 1 2 Nesbitt, Sterling J.; Sidor, Christian A.; Angielczyk, Kenneth D.; Smith, Roger M. H.; Tsuji, Linda A. (2014-09-19). "A new archosaur from the Manda beds (Anisian, Middle Triassic) of southern Tanzania and its implications for character state optimizations at Archosauria and Pseudosuchia". Journal of Vertebrate Paleontology. 34 (6): 1357–1382. Bibcode:2014JVPal..34.1357N. doi:10.1080/02724634.2014.859622. ISSN   0272-4634. S2CID   129558756.
  26. ↑ Peecook, Brandon R.; Sidor, Christian A. (2015-05-20). "The First Dinosaur from Washington State and a Review of Pacific Coast Dinosaurs from North America". PLOS ONE. 10 (5): e0127792. Bibcode:2015PLoSO..1027792P. doi: 10.1371/journal.pone.0127792 . ISSN   1932-6203. PMC   4439161 . PMID   25993090.
  27. 1 2 Nesbitt, Sterling J.; Butler, Richard J.; Ezcurra, Martín D.; Barrett, Paul M.; Stocker, Michelle R.; Angielczyk, Kenneth D.; Smith, Roger M. H.; Sidor, Christian A.; Niedźwiedzki, Grzegorz; Sennikov, Andrey G.; Charig, Alan J. (2017). "The earliest bird-line archosaurs and the assembly of the dinosaur body plan" (PDF). Nature. 544 (7651): 484–487. Bibcode:2017Natur.544..484N. doi:10.1038/nature22037. ISSN   0028-0836. PMID   28405026. S2CID   9095072.
  28. ↑ "Reptile Relative Was Among the First Animals to Walk On Upright Legs". Science. 2015-09-21. Archived from the original on July 10, 2020. Retrieved 2020-07-10.
  29. ↑ "Dinosaurs Ten Million Years Older Than Thought". National Geographic News. 2010-03-04. Archived from the original on July 13, 2020. Retrieved 2020-07-10.
  30. ↑ "'Scarface,' an ancient cousin to mammals, unearthed in Africa". UW News. Retrieved 2020-07-10.
  31. ↑ "Going to the end of the Earth to uncover fossil life in Antarctica". Burke Museum. Retrieved 2020-07-10.
  32. ↑ Gonçalves, Gabriel S.; Sidor, Christian A. (2019-12-15). "A new drepanosauromorph, Ancistronychus paradoxus n. gen. et sp., from the Chinle Formation of Petrified Forest National Park, Arizona, USA". PaleoBios. 36: 1–10. doi: 10.5070/P9361046203 .
  33. ↑ Arbez, Thomas; Sidor, Christian A.; Steyer, J.-Sébastien (2018-09-27). "Laosuchus naga gen. et sp. nov., a new chroniosuchian from South-East Asia (Laos) with internal structures revealed by micro-CT scan and discussion of its palaeobiology" (PDF). Journal of Systematic Palaeontology. 17 (14): 1165–1182. doi:10.1080/14772019.2018.1504827. ISSN   1477-2019. S2CID   91670454.
  34. ↑ Peecook, Brandon R.; Smith, Roger M. H.; Sidor, Christian A. (2018-11-02). "A novel archosauromorph from Antarctica and an updated review of a high-latitude vertebrate assemblage in the wake of the end-Permian mass extinction". Journal of Vertebrate Paleontology. 38 (6): e1536664. Bibcode:2018JVPal..38E6664P. doi:10.1080/02724634.2018.1536664. ISSN   0272-4634. S2CID   92116260.
  35. ↑ Whitney, Megan R.; Sidor, Christian A. (2016-04-11). "A new therapsid from the Permian Madumabisa Mudstone Formation (Mid-Zambezi Basin) of southern Zambia". Journal of Vertebrate Paleontology. 36 (4): e1150767. Bibcode:2016JVPal..36E0767W. doi:10.1080/02724634.2016.1150767. ISSN   0272-4634. S2CID   130695355.
  36. ↑ Huttenlocker, Adam K.; Sidor, Christian A. (2016-03-10). "The first karenitid (Therapsida, Therocephalia) from the upper Permian of Gondwana and the biogeography of Permo-Triassic therocephalians". Journal of Vertebrate Paleontology. 36 (4): e1111897. Bibcode:2016JVPal..36E1897H. doi:10.1080/02724634.2016.1111897. ISSN   0272-4634. S2CID   130994874.
  37. ↑ Huttenlocker, Adam K.; Sidor, Christian A.; Angielczyk, Kenneth D. (2015-07-20). "A new eutherocephalian (Therapsida, Therocephalia) from the upper Permian Madumabisa Mudstone Formation (Luangwa Basin) of Zambia". Journal of Vertebrate Paleontology. 35 (5): e969400. Bibcode:2015JVPal..35E9400H. doi:10.1080/02724634.2015.969400. ISSN   0272-4634. S2CID   83554630.
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  39. ↑ Sidor, Christian A.; Steyer, J. SéBastien; Hammer, William R. (2014-04-16). "A new capitosauroid temnospondyl from the Middle Triassic upper Fremouw Formation of Antarctica". Journal of Vertebrate Paleontology. 34 (3): 539–548. Bibcode:2014JVPal..34..539S. doi:10.1080/02724634.2013.808205. ISSN   0272-4634. S2CID   86010469.
  40. ↑ Peecook, Brandon R.; Sidor, Christian A.; Nesbitt, Sterling J.; Smith, Roger M. H.; Steyer, J. Sebastien; Angielczyk, Kenneth D. (2013). "A new silesaurid from the upper Ntawere Formation of Zambia (Middle Triassic) demonstrates the rapid diversification of Silesauridae (Avemetatarsalia, Dinosauriformes)". Journal of Vertebrate Paleontology. 33 (5): 1127–1137. Bibcode:2013JVPal..33.1127P. doi:10.1080/02724634.2013.755991. ISSN   0272-4634. S2CID   140653951.
  41. ↑ Fröbisch, Jörg; Angielczyk, Kenneth D.; Sidor, Christian A. (2009-12-03). "The Triassic dicynodont Kombuisia (Synapsida, Anomodontia) from Antarctica, a refuge from the terrestrial Permian-Triassic mass extinction". Naturwissenschaften. 97 (2): 187–196. doi:10.1007/s00114-009-0626-6. ISSN   0028-1042. PMID   19956920. S2CID   20557454.
  42. ↑ Sidor, Christian A.; Smith, Roger M. H. (2007-06-12). "A second burnetiamorph therapsid from the Permian Teekloof Formation of South Africa and its associated fauna". Journal of Vertebrate Paleontology. 27 (2): 420–430. doi:10.1671/0272-4634(2007)27[420:asbtft]2.0.co;2. ISSN   0272-4634. S2CID   86173425.
  43. ↑ Rubidge, Bruce S.; Sidor, Christian A.; Modesto, Sean P. (2006). "A New Burnetiamorph (Therapsida: Biarmosuchia) from the Middle Permian of South Africa". Journal of Paleontology. 80 (4): 740–749. doi:10.1666/0022-3360(2006)80[740:ANBTBF]2.0.CO;2. ISSN   0022-3360. S2CID   130196490.
  44. ↑ Smith, Roger M. H.; Rubidge, Bruce S.; Sidor, Christian A. (2006-06-12). "A new burnetiid (Therapsida: Biarmosuchia) from the Upper Permian of South Africa and its biogeographic implications". Journal of Vertebrate Paleontology. 26 (2): 331–343. doi:10.1671/0272-4634(2006)26[331:anbtbf]2.0.co;2. ISSN   0272-4634. S2CID   86367955.
  45. ↑ SIDOR, C. A.; HANCOX, P. J. (2006). "Elliotherium Kersteni, A New Tritheledontid from the Lower Elliot Formation (Upper Triassic) of South Africa". Journal of Paleontology. 80 (2): 333–342. doi:10.1666/0022-3360(2006)080[0333:ekantf]2.0.co;2. ISSN   0022-3360. S2CID   130003909.
  46. ↑ Sidor, Christian A.; Rubidge, Bruce S. (2006). Herpetoskylax hopsoni, a new biarmosuchian (Therapsida: Biarmosuchia) from the Beaufort Group of South Africa. pp. 76–113.{{cite book}}: |work= ignored (help)
  47. ↑ Sidor, Christian A.; Hopson, James A.; Keyser, André W. (2004-12-10). "A new burnetiamorph therapsid from the Teekloof Formation, Permian, of South Africa". Journal of Vertebrate Paleontology. 24 (4): 938–950. doi:10.1671/0272-4634(2004)024[0938:anbtft]2.0.co;2. ISSN   0272-4634. S2CID   85752458.
  48. ↑ Sidor, Christian A.; Smith, Roger M. H. (2004). "A new galesaurid (Therapsida: Cynodontia) from the Lower Triassic of South Africa". Palaeontology. 47 (3): 535–556. Bibcode:2004Palgy..47..535S. doi: 10.1111/j.0031-0239.2004.00378.x . ISSN   0031-0239. S2CID   129906726.
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  50. ↑ Sereno, P. C.; Dutheil, D. B.; Iarochene, M.; Larsson, H. C. E.; Lyon, G. H.; Magwene, P. M.; Sidor, C. A.; Varricchio, D. J.; Wilson, J. A. (1996-05-17). "Predatory Dinosaurs from the Sahara and Late Cretaceous Faunal Differentiation" (PDF). Science. 272 (5264): 986–991. Bibcode:1996Sci...272..986S. doi:10.1126/science.272.5264.986. ISSN   0036-8075. PMID   8662584. S2CID   39658297.
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