Ulemica is an extinctgenus of venyukovioidtherapsids, a type of anomodont related to dicynodonts. It lived during the Middle Permian period in what is now Russia, and is known from the Isheevo assemblage of the Amanakskaya Formation. The type species, U. invisa, was originally placed in the genus Venyukovia by Russian palaeontologistIvan Efremov in 1940. It was later given its own genus Ulemica in 1996 by Mikhaïl Ivakhnenko, who also named a second species U. efremovi.[1] Efremov had originally intended to name the fossils of U. invisa as 'Myctosuchus invisus', however, he later recognised their similarity to Venyukovia and chose to assign the Isheevo material to this genus and leaving 'Myctosuchus' a nomen nudum.[2]
Illustration of a composite Ulemica skull, combining the cranium of U. efremovi with mandibles of U. invisa.
Ulemica is known from multiple skulls and jaws from individuals of various ages, mostly of U. invisa, while U. efremovi is known only by a single skull.[3] An unusual feature of Ulemica is a pair of prominent bony bosses on each mandible, one at the bottom corner of the chin and another along the bottom edge of the jaw. These bosses are only seen in the largest and presumably oldest individuals.[4]
^Ivakhnenko, M. F. (1996). "Primitive anomodonts, venyukoviids, from the Late Permian of Eastern Europe". Paleontological Journal. 30: 575–582.
^Rybczynski, N. (2000). "Cranial anatomy and phylogenetic position of Suminia getmanovi, a basal anomodont (Amniota: Therapsida) from the Late Permian of Eastern Europe". Zoological Journal of the Linnean Society. 130 (3): 329–373. doi:10.1006/zjls.1999.0218.
^Barghusen, H. R. (1976). "Notes on the adductor jaw musculature of Venjukovia, a primitive anomodont therapsid from the Permian of the USSR". Annals of the South African Museum. 69 (10): 249–260. ISBN0949940933.
^King, G. M. (1994). "The early anomodont Venjukovia and the evolution of the anomodont skull". Journal of Zoology. 232 (4): 651–673. doi:10.1111/j.1469-7998.1994.tb04620.x.
External linksedit
The main groups of non-mammalian synapsids at Mikko's Phylogeny Archive
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ulemica, extinct, genus, venyukovioid, therapsids, type, anomodont, related, dicynodonts, lived, during, middle, permian, period, what, russia, known, from, isheevo, assemblage, amanakskaya, formation, type, species, invisa, originally, placed, genus, venyukov. Ulemica is an extinct genus of venyukovioid therapsids a type of anomodont related to dicynodonts It lived during the Middle Permian period in what is now Russia and is known from the Isheevo assemblage of the Amanakskaya Formation The type species U invisa was originally placed in the genus Venyukovia by Russian palaeontologist Ivan Efremov in 1940 It was later given its own genus Ulemica in 1996 by Mikhail Ivakhnenko who also named a second species U efremovi 1 Efremov had originally intended to name the fossils of U invisa as Myctosuchus invisus however he later recognised their similarity to Venyukovia and chose to assign the Isheevo material to this genus and leaving Myctosuchus a nomen nudum 2 UlemicaTemporal range Middle Permian 265 Ma PreꞒ Ꞓ O S D C P T J K Pg N Restoration of Ulemica sp Scientific classification Domain Eukaryota Kingdom Animalia Phylum Chordata Clade Synapsida Clade Therapsida Suborder Anomodontia Infraorder Venyukovioidea Genus UlemicaIvakhnenko 1996 Type species Venyukovia invisaEfremov 1940 Species U invisa Efremov 1940 U efremovi Ivakhnenko 1996 Illustration of a composite Ulemica skull combining the cranium of U efremovi with mandibles of U invisa Ulemica is known from multiple skulls and jaws from individuals of various ages mostly of U invisa while U efremovi is known only by a single skull 3 An unusual feature of Ulemica is a pair of prominent bony bosses on each mandible one at the bottom corner of the chin and another along the bottom edge of the jaw These bosses are only seen in the largest and presumably oldest individuals 4 See also editList of therapsidsReferences edit Ivakhnenko M F 1996 Primitive anomodonts venyukoviids from the Late Permian of Eastern Europe Paleontological Journal 30 575 582 Rybczynski N 2000 Cranial anatomy and phylogenetic position of Suminia getmanovi a basal anomodont Amniota Therapsida from the Late Permian of Eastern Europe Zoological Journal of the Linnean Society 130 3 329 373 doi 10 1006 zjls 1999 0218 Barghusen H R 1976 Notes on the adductor jaw musculature of Venjukovia a primitive anomodont therapsid from the Permian of the USSR Annals of the South African Museum 69 10 249 260 ISBN 0949940933 King G M 1994 The early anomodont Venjukovia and the evolution of the anomodont skull Journal of Zoology 232 4 651 673 doi 10 1111 j 1469 7998 1994 tb04620 x External links editThe main groups of non mammalian synapsids at Mikko s Phylogeny Archive nbsp This Anomodont related article is a stub You can help Wikipedia by expanding it vte Retrieved from https en wikipedia org w index php title Ulemica amp oldid 1136333865, wikipedia, wiki, book, books, library,
