Khodzhakul Formation

Last updated
Khodzhakul Formation
Stratigraphic range: Cenomanian
~93–89  Ma
O
S
D
C
P
T
J
K
Pg
N
Type Geological formation
Underlies Tamdytruba & Bissekty Formations
Overlies Bortesken Formation
Lithology
Primary Sandstone
Location
Coordinates 40°06′N65°48′E / 40.1°N 65.8°E / 40.1; 65.8
Approximate paleocoordinates 35°54′S65°30′E / 35.9°S 65.5°E / -35.9; 65.5
Region Karakalpakstan
CountryFlag of Uzbekistan.svg  Uzbekistan
Relief Map of Uzbekistan.png
Lightgreen pog.svg
Khodzhakul Formation (Uzbekistan)

The Khodzhakul Formation is a Cenomanian aged geologic formation in Uzbekistan. Dinosaur remains are among the fossils that have been recovered from the formation. [1] As well as those of Mammals. [2] It is part of the same stratigraphic succession as the overlying Bissekty Formation.

Contents

Fossil content

One of the largest mammals of the Mesozoic, Oxlestes , occurred in this formation, and may have predated on dinosaur species. [3]

Dinosaurs
GenusSpeciesLocationStratigraphic positionMaterialNotesImages

Asiaceratops [4]

A. salsopaludalis [4]

"Teeth, cranial fragments, phalanx." [5]

Gilmoreosaurus [6]

G. atavus [6]

Horezmavis [7]

H. eocretaceous [7]

"Tarsometatarsus." [8]

Kulceratops [4]

K. kulensis [4]

"Fragmentary material." [5]

Therizinosauroidea

Indeterminate [9]

Upper

Pectinodon [4]

P. Sp [4]

Mammals [2]
GenusSpeciesLocationStratigraphic positionMaterialNotesImages
Bobolestes B. zengeMaxilla and dentary fragmentsZalambdalestoidea
Eozhelestes E. mangitdentary fragments and teeth
Sheikhdzheilia S. rezvyiiMaxilla and dentary fragments?Zhelestidae
Zalambdalestidae IndeterminateRight petrosal
‘‘Zhelestidae’’IndeterminateLeft dentary and dentary fragmentLarge taxon
Color key
Taxon Reclassified taxonTaxon falsely reported as presentDubious taxon or junior synonym Ichnotaxon Ootaxon Morphotaxon
Notes
Uncertain or tentative taxa are in small text; crossed out taxa are discredited.

See also

Related Research Articles

<span class="mw-page-title-main">Lance Formation</span> Geological formation in the United States

The Lance (Creek) Formation is a division of Late Cretaceous rocks in the western United States. Named after Lance Creek, Wyoming, the microvertebrate fossils and dinosaurs represent important components of the latest Mesozoic vertebrate faunas. The Lance Formation is Late Maastrichtian in age, and shares much fauna with the Hell Creek Formation of Montana and North Dakota, the Frenchman Formation of southwest Saskatchewan, and the lower part of the Scollard Formation of Alberta.

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

The Lameta Formation, also known as the Infratrappean Beds, is a sedimentary geological formation found in Madhya Pradesh, Gujarat, Maharashtra, Telangana, and Andhra Pradesh, India, associated with the Deccan Traps. It is of the Maastrichtian age, and is notable for its dinosaur fossils.

The Khuren Dukh Formation, also known as the Khukhtyk Formation, Khukhteeg Formation, or Hühteeg Svita,, is a geological formation in Mongolia whose strata date back to the Aptian–Albian ages of the Early Cretaceous. Dinosaur remains are among the fossils that have been recovered from the formation.

<span class="mw-page-title-main">Tugulu Group</span>

The Tugulu Group is a geological Group in Xinjiang, China whose strata date back to the Early Cretaceous. Dinosaur skeletal remains and footprints are among the fossils that have been recovered from the formation.

<span class="mw-page-title-main">Aguja Formation</span> Geological formation in North America

The Aguja Formation is a geological formation in North America, exposed in Texas, United States and Chihuahua and Coahuila in Mexico, whose strata date back to the Late Cretaceous. Dinosaur remains are among the fossils that have been recovered from the formation. Fossil palms have also been unearthed here.

The Bostobe Formation is a geological formation in Qaraghandy & Qyzylorda, Kazakhastan whose strata date back to the Late Cretaceous.

<span class="mw-page-title-main">Wangshi Group</span>

The Wangshi Group is a geological Group in Shandong, China whose strata date back to the Coniacian to Campanian stages of the Late Cretaceous. Dinosaur remains are among the fossils that have been recovered from the group.

<span class="mw-page-title-main">La Colonia Formation</span> Geological formation in Argentina

The La Colonia Formation is a geological formation in Argentina whose strata date back to the Late Cretaceous. Dinosaur remains are among the fossils that have been recovered from the formation.

The Río Neuquén Subgroup is a geological subgroup in the Neuquén Basin, Neuquén Province, Argentina, whose strata date back to the Late Cretaceous. The subgroup, formerly defined as a formation, is the middle unit of the Neuquén Group and contains the Plottier, Sierra Barrosa Formation, Los Bastos Formation, and Portezuelo Formations. The subgroup overlies the Río Limay Subgroup and is overlain by the Río Colorado Subgroup. Dinosaur remains are among the fossils that have been recovered from the formation.

The Lecho Formation is a geological formation in the Salta Basin of the provinces Jujuy and Salta of northwestern Argentina. Its strata date back to the Early Maastrichtian, and is a unit of the Salta Group. The fine-grained bioturbated sandstones of the formation were deposited in a fluvial to lacustrine coastal plain environment.

<span class="mw-page-title-main">Allen Formation</span> Geological formation in Argentina

The Allen Formation is a geological formation in Argentina whose strata date back to the Late Cretaceous (middle Campanian to early Maastrichtian. Dinosaur remains are among the fossils that have been recovered from the formation. Indeterminate chelid remains and other vertebrates have also been discovered in this formation.

<span class="mw-page-title-main">Kem Kem Group</span> Geological group in eastern Morocco

The Kem Kem Group is a geological group in the Kem Kem region of eastern Morocco, whose strata date back to the Cenomanian stage of the Late Cretaceous. Its strata are subdivided into two geological formations, with the lower Ifezouane Formation and the upper Aoufous Formation used for the strata on the eastern side of the Atlas Mountains (Tinghir), with the Gara Sbaa Formation and Douira Formation used in the southern Tafilalt region. It is exposed on an escarpment along the Algeria–Morocco border.

The Bissekty Formation is a geologic formation and Lagerstätte which crops out in the Kyzyl Kum desert of Uzbekistan, and dates to the Late Cretaceous Period. Laid down in the mid to late Turonian, it is dated to about 92 to 90 Ma.

The Balabansai Formation is a geological formation in Kazakhstan, Kyrgyzstan and Uzbekistan whose strata date back to the Bathonian and Callovian stages of the Middle Jurassic. Dinosaur remains are among the fossils that have been recovered from the formation. The lithology primarily consists of variegated sandstones, siltstones, claystones, and rare gravels and marls. Many taxa have been found in the formation, including amphibians and mammals.

The Lianmuqin Formation, also transcribed as Lianmugin Formation, and Lianmuxin Formation, is an Early Cretaceous geologic formation composed of "interbedded red green and yellow variegated mudstones and siltstones". Dinosaur remains have been recovered from it.

The Ialovachsk or Yalovach Formation is a geologic formation in Kyrgyzstan, Tajikistan and Uzbekistan dating to the Santonian age of the Cretaceous period.

<span class="mw-page-title-main">Opisthocoelicaudiinae</span> Extinct clade of dinosaurs

Opisthocoelicaudiinae is a subfamily of titanosaurian dinosaurs from the Late Cretaceous. It was named by John McIntosh in 1990. Opisthocoelicaudiines are known from Mongolia, Argentina, and the United States. Two genera were assigned to Opisthocoelicaudiinae by Gonzalez et al. (2009): Alamosaurus and Opisthocoelicaudia, a conclusion also found by Díez Díaz et al. (2018). The hands of opisthocoelicaudiines lacked wrist bones and phalanges.

<span class="mw-page-title-main">Timeline of hadrosaur research</span>

This timeline of hadrosaur research is a chronological listing of events in the history of paleontology focused on the hadrosauroids, a group of herbivorous ornithopod dinosaurs popularly known as the duck-billed dinosaurs. Scientific research on hadrosaurs began in the 1850s, when Joseph Leidy described the genera Thespesius and Trachodon based on scrappy fossils discovered in the western United States. Just two years later he published a description of the much better-preserved remains of an animal from New Jersey that he named Hadrosaurus.

Oxlestes is an extinct mammal from the Late Cretaceous of Asia, more specifically from the Cenomanian of Uzbekistan. A carnivorous species of uncertain affinities, it is notable for its relatively large size, being among the largest of all Mesozoic mammals. Due to the limited amount of material, it has been considered a nomen dubium.

<i>Dzharatitanis</i> Extinct genus of dinosaurs

Dzharatitanis is a genus of sauropod from the Bissekty Formation in Uzbekistan, dating to the Turonian age of the Late Cretaceous. The genus contains a single species, Dzharatitanis kingi, named after geologist Christopher King, who contributed to the Cretaceous geology of Asia. It is currently one of two known sauropods from the Bissekty Formation, alongside an indeterminate titanosaur. In its original publication it was considered to be a member of Rebbachisauridae, but later papers considered it to be a titanosaur.

References

  1. Weishampel, et al., 2004, "Dinosaur distribution." pp.517-607
  2. 1 2 Averianov, Alexander; Archibald, J. David (August 2005). "Mammals from the mid-Cretaceous Khodzhakul Formation, Kyzylkum Desert, Uzbekistan" (PDF). Cretaceous Research. 26 (4): 593–608. Bibcode:2005CrRes..26..593A. doi:10.1016/j.cretres.2005.03.007.
  3. Michael J. Benton,Mikhail A. Shishkin, David M. Unwin, The Age of Dinosaurs in Russia and Mongolia, Cambridge University Press, 04/12/2003 - 740 páginas
  4. 1 2 3 4 5 6 7 8 9 10 "40.3 Qoraqalpoghiston Respublikasi, Uzbekistan; 1. Upper Khodzhakul Formation," in Weishampel, et al. (2004). Page 594.
  5. 1 2 "Table 22.1," in Weishampel, et al. (2004). Page 480.
  6. 1 2 Listed as "? Gilmoreosaurus sp." in "40.3 Qoraqalpoghiston Respublikasi, Uzbekistan; 1. Upper Khodzhakul Formation," in Weishampel, et al. (2004). Page 594.
  7. 1 2 3 "40.3 Qoraqalpoghiston Respublikasi, Uzbekistan; 1. Lower Khodzhakul Formation," in Weishampel, et al. (2004). Page 563.
  8. "Table 11.1," in Weishampel, et al. (2004). Page 214.
  9. Sues, Hans-Dieter; Averianov, Alexander (2016). "Therizinosauroidea (Dinosauria: Theropoda) from the Upper Cretaceous of Uzbekistan". Cretaceous Research. 59: 155–178. Bibcode:2016CrRes..59..155S. doi: 10.1016/j.cretres.2015.11.003 .

Bibliography