Allaru Formation

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Allaru Formation
Stratigraphic range: Albian
~112–100  Ma
Type Geological formation
Unit of Rolling Downs Group
Underlies Mackunda Formation
Overlies Toolebuc Formation
ThicknessUp to 700 m (2,300 ft)
Lithology
Primary Mudstone
Other Siltstone, sandstone, limestone
Location
Coordinates 24°52′02.17″S146°14′19.85″E / 24.8672694°S 146.2388472°E / -24.8672694; 146.2388472
Approximate paleocoordinates 51°00′S133°06′E / 51.0°S 133.1°E / -51.0; 133.1
Region Queensland
CountryFlag of Australia (converted).svg  Australia
Extent Eromanga Basin
Australia relief map.jpg
Green pog.svg
Allaru Formation (Australia)
Australia Queensland relief location map.jpg
Green pog.svg
Allaru Formation (Queensland)

The Allaru Formation, also known as the Allaru Mudstone, is a geological formation in Queensland, Australia, whose strata date back to the Early Cretaceous. Dinosaur remains are among the fossils that have been recovered from the formation. [1]

Contents

Fossil content

Possible indeterminate ankylosaur remains are present in Queensland. Indeterminate ornithopod remains are present in Queensland. [1]

Archosaurs

Dinosaurs

GenusSpeciesLocationMaterialNotesImages
Austrosaurus A. mckillopiQueensland"Doral vertebrae [and possible] incomplete limb remains from several individuals" [2] A Somphospondyli sauropod. [1]
Austrosaurus McKillopi.png
Kunbarrasaurus K. ieversiQueenslandA parankylosaur. [1] [3]
Minmi model Canberra email.jpg
?Muttaburrasaurus  ?M. sp.Queensland [1]
Muttaburrasaurus NT.jpg

Reptiles

GenusSpeciesLocationMaterialNotesImages
Elasmosauridae IndeterminateSpecimen number QMF2100, an articulated torso. Stomach cavity contains crustacean and fish remains as well as ~135 gastroliths. [4] [4]
Notochelone N. costata [5]
Notochelone costata.jpg
Platypterygius P. australis (=longmani) [5]
Platypterigius kiprjanov2.jpg

Fish

GenusSpeciesLocationMaterialNotesImages
Cooyoo C. australisQueensland [6]
Flindersichthys F. denmeadi [7]
Pachyrhizodus P. marathonensis, P. grawiTwo species known from both this and the Toolebuc Formation [8]
Richmondichthys R. sweetiAn aspidorhynchid also found in the Toolebuc Formation [9]

Invertebrates

GenusSpeciesLocationMaterialNotesImages
Eromangateuthis E. soniaeQueensland"Gladius" [2]
Goodhallites G. goodhalli [10]
Inoceramus I. sutherlandiQueensland [11]
Mckenziephyllia M. accordensis [12]

See also

Related Research Articles

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References

  1. 1 2 3 4 5 Weishampel et al., 2004, pp.573-574
  2. 1 2 Fuchs, Dirk (2019). "Eromangateuthis N. Gen., a New Genus for a Late Albian Gladius-Bearing Giant Octobrachian (Cephalopoda: Coleoidea)". Paleontological Contributions. 2019 (21): 1–3. doi: 10.17161/1808.29619 . ISSN   1946-0279. S2CID   204976334.
  3. Leahey et al., 2015
  4. 1 2 Colin R. McHenry; Alex G. Cook; Stephen Wroe (November 2005). "Bottom-Feeding Plesiosaurs". Science. 310 (5745): 75. doi:10.1126/science.1117241. PMID   16210529. S2CID   28832109 via ResearchGate.
  5. 1 2 Kear, Benjamin P. (June 2003). "Cretaceous marine reptiles of Australia: A review of taxonomy and distribution". Cretaceous Research. 24 (3): 277–303. Bibcode:2003CrRes..24..277K. doi:10.1016/S0195-6671(03)00046-6 via ResearchGate.
  6. Lovisa Wretman; Benjamin P. Kear (April 2014). "Bite marks on an ichthyodectiform fish from Australia: Possible evidence of trophic interaction in an Early Cretaceous marine ecosystem". Alcheringa. 38 (2): 170–176. Bibcode:2014Alch...38..170W. doi:10.1080/03115518.2014.848692. S2CID   140194963 via ResearchGate.
  7. Bartholomai, A. (2010). "Revision of Flindersichthys denmeadi Longman 1932, a marine teleost from the Lower Cretaceous of the Great Artesian Basin, Queensland". Memoirs of the Queensland Museum. S2CID   189970876.
  8. Bartholomai, A. (17 February 2012). "The pachyrhizodontid teleosts from the marine Lower Cretaceous (latest mid to late Albian) sediments of the Eromanga Basin, Queensland, Australia". Memoirs of the Queensland Museum – Nature. 56 (1): 119–148.
  9. Bartholomai, A. (2004). "The large aspidorhynchid fish, Richmondichthys sweeti (Etheridge Jnr and Smith Woodward, 1891) from Albian Marine deposits of Queensland, Australia". Memoirs of the Queensland Museum. S2CID   195531265.
  10. R.A. Henderson; W.J. Kennedy (2002). "Occurrence of the ammonite Goodhallites goodhalli (J. Sowerby) in the Eromanga Basin, Queensland: an index species for the late Albian (Cretaceous)". Alcheringa. 26 (2): 233–247. Bibcode:2002Alch...26..233H. doi:10.1080/03115510208619254. S2CID   130589426 via ResearchGate.
  11. Patrick Mark Smith; Timothy Holland (July 2016). "Cretaceous time capsules: remarkable preservation of fish and crustaceans inside the bivalve Inoceramus sutherlandi McCoy, 1865 from the Allaru Mudstone (late Albian), Eromanga Basin, Queensland". ResearchGate. doi: 10.13140/RG.2.1.2264.9842 .
  12. John S. Jell; Alex G. Cook; Peter A. Jell (2010). "Australian Cretaceous Cnidaria and Porifera". Alcheringa: An Australasian Journal of Palaeontology. 35 (2): 241–284. doi:10.1080/03115518.2011.532322. S2CID   129707733.

Bibliography