Mammalian distal humeri from the Late Cretaceous of Uzbekistan

• Autorzy: Chester S G B , Sargis E.J. , Szalay F.S. , Archibald J.D. , Averianov A.O.
• Języki publikacji: EN

Abstrakty

EN

We describe mammalian distal humeri recovered from the Bissekty Formation, Dzharakuduk, Kyzylkum Desert, Uzbekistan (90 Ma). Isolated elements were sorted into groups that likely correspond to species (or genera). These groups were allocated to taxa known mostly from the dentition, petrosals, and/or tarsals at this site. We identified one humerus of a multituberculate and one of a zalambdalestid. Several eutherian humeri have been tentatively assigned to Zhelestidae based on their dissimilarity to zalambdalestids and the abundance of zhelestids in the dental record. The zalambdalestids and zhelestids were probably terrestrial. At least two metatherian taxa have also been identified, and both were likely arboreal. Although the dental record suggests twelve eutherian species and only one metatherian, crurotarsal evidence supports the presence of at least four metatherian species at Dzharakuduk. The humeri analyzed here also provide support for the presence of multiple metatherians in the fauna, further demonstrating that postcrania are critical to understanding the taxonomic diversity present at these Late Cretaceous localities.

• Wydawca: -
• Czasopismo: Acta Palaeontologica Polonica
• Rocznik: 2010
• Tom: 55
• Numer: 2
• Opis fizyczny: p.199-211,fig.,ref.

Twórcy

autor

Chester S G B

• Yale University, P.O.Box 208277, New Haven, CT 06520, USA

autor

Sargis E.J.

autor

Szalay F.S.

autor

Archibald J.D.

autor

Averianov A.O.

Bibliografia

• Archibald, J.D. and Averianov, A.O. 2005. Mammalian faunal succession in the Cretaceous of the Kyzylkum Desert. Journal of Mammalian Evolution 12: 9–22. http://dx.doi.org/10.1007/s10914-005-4867-3
• Argot, C. 2001. Functional−adaptive anatomy of the forelimb in the Didelphidae, and the paleobiology of the Paleocene marsupials Mayulestes ferox and Pucadelphys andinus. Journal of Morphology 247: 51–79. http://dx.doi.org/10.1002/1097−4687(200101)247:1%3C51::AID−JMOR1003%3E3.0.CO;2−%23
• Averianov, A.O., Archibald, J.D., and Ekdale, E.G. (in press). New material of the Late Cretaceous deltatheroidan mammal Sulestesfrom Uzbekistan and phylogenetic reassessment of the metatherian−eutherian dichotomy. Journal of Systematic Palaeontology.
• Ekdale, E.G., Archibald, J.D., and Averianov, A.O. 2004. Petrosal bones of placental mammals from the Late Cretaceous of Uzbekistan. Acta Palaeontologica Polonica 49: 161–176.
• Gambaryan, P.P. and Kielan−Jaworowska, Z. 1997. Sprawling versus parasagittal stance in multituberculate mammals. Acta Palaeontologica Polonica 42: 13–44.
• Gebo, D.L. and Sargis, E.J. 1994. Terrestrial adaptations in the postcranial skeletons of guenons. American Journal of Physical Anthropology 93: 341–371. http://dx.doi.org/10.1002/ajpa.1330930306
• Jenkins, F.A. Jr. 1973. The functional anatomy and evolution of the mammalian humero−ulnar articulation. American Journal of Anatomy 137: 281–298. http://dx.doi.org/10.1002/aja.1001370304
• Kielan−Jaworowska, Z. 1978. Evolution of the therian mammals in the Late Cretaceous of Asia. Part III. Postcranial skeleton in Zalambdalestidae. Palaeontologia Polonica 38: 3–41.
• Kielan−Jaworowska, Z. and Gambaryan, P.P. 1994. Postcranial anatomy and habits of Asian multituberculate mammals. Fossils and Strata 36: 1–92.
• Kielan−Jaworowska, Z. and Hurum, J.H. 2006. Limb posture in multituberculates and other early mammals. Acta Palaeontologica Polonica 51: 393–406.
• Kielan−Jaworowska, Z. and Nessov, L.A. 1992. Multituberculate mammals from the Cretaceous of Uzbekistan. Acta Palaeontologica Polonica 37: 1–17.
• Krause, D.W. and Jenkins, F.A. Jr. 1983. The postcranial skeleton of North American multituberculates (Mammalia). Bulletin of the Museum of Comparative Zoology, Harvard University 150: 199–246.
• McEvoy, J.S. 1982. Comparative myology of the pectoral and pelvic appendages of the North American porcupine (Erethizon dorsatum) and the prehensile−tailed porcupine (Coendou prehensilis). Bulletin of the American Museum of Natural History 173: 337–421.
• Pauly, J.E., Rushing, J.L., and Scheving, L.E. 1967. An electromyographic study of some muscles crossing the elbow joint. Anatomical Record 159: 47–53. http://dx.doi.org/10.1002/ar.1091590108
• Salton, J.A. and Sargis, E.J. 2008. Evolutionary morphology of the Tenrecoidea (Mammalia) forelimb skeleton. In: E.J. Sargis and M. Dagosto (eds.), Mammalian Evolutionary Morphology: A Tribute to Frederick S. Szalay, 51–71. Springer, Dordrecht.
• Sargis, E.J. 2002. Functional morphology of the forelimb of tupaiids (Mammalia, Scandentia) and its phylogenetic implications. Journal of Morphology 253: 10–42. http://dx.doi.org/10.1002/jmor.1110
• Sereno, P.C. 2006. Shoulder girdle and forelimb in multituberculates: evolution of parasagittal forelimb posture in mammals. In: M.T. Carrano, T.J. Gaudin, R.W. Blob, and J.R. Wible (eds.), Amniote Paleobiology: Perspectives on the Evolution of Mammals, Birds, and Reptiles. A Volume Honoring James Allen Hopson, 315–366. The University of Chicago Press, Chicago.
• Sereno, P.C. and McKenna, M.C. 1995. Cretaceous multituberculate skeleton and the early evolution of the mammalian shoulder girdle. Nature 377: 144–147. http://dx.doi.org/10.1038/377144a0
• Szalay, F.S. and Dagosto, M. 1980. Locomotor adaptations as reflected on the humerus of Paleogene primates. Folia Primatologica 34: 1–45. http://dx.doi.org/10.1159/000155946
• Szalay, F.S. and Sargis, E.J. 2001. Model−based analysis of postcranial osteology of marsupials from the Palaeocene of Itaboraí (Brazil) and the phylogenetics and biogeography of Metatheria. Geodiversitas 23: 139–302.
• Szalay, F.S. and Sargis, E.J. 2006. Cretaceous therian tarsals and the metatherian−eutherian dichotomy. Journal of Mammalian Evolution 13: 171–210. http://dx.doi.org/10.1007/s10914-006-9024-4