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Mammal remains from the Lower Cretaceous Bol'shoi Terekhtyul' locality in West Siberia, Russia

Published on May 1, 2015in Cretaceous Research2.12
· DOI :10.1016/j.cretres.2014.12.007
Alexander O. Averianov23
Estimated H-index: 23
(Tomsk State University),
A. V. Lopatin11
Estimated H-index: 11
(RAS: Russian Academy of Sciences)
Cite
Abstract
Four mammalian taxa have been identified based on upper molariform tooth and edentulous dentary fragments from the Bol'shoi Terekhtyul' locality of the Lower Cretaceous Ilek Formation (Krasnoyarsk Territory, Russia): Docodonta indet., Amphidontidae indet., Zhangheotheria indet. sp. A and sp. B. The docodontan from Bol'shoi Terekhtyul is smaller than Sibirotherium rossicum from the Ilek Formation at Shestakovo 1 locality (Kemerovo Province, Russia) and may belong to a distinct taxon. It is one of the younger docodontans in the fossil record. The mammal assemblage from the Bol'shoi Terekhtyul' locality is drastically different from the mammal assemblage of nearby localities of the Ilek Formation along Bol'shoi Kemchug River, which consists of Gobiconodontidae and Amphilestidae. The reason for this faunal discrepancy is unclear for the moment.
  • References (31)
  • Citations (8)
Cite
References31
Newest
Published on Jun 1, 2015in Palaeontologische Zeitschrift1.27
Alexander Averianov7
Estimated H-index: 7
(SPbU: Saint Petersburg State University),
Thomas Martin26
Estimated H-index: 26
(University of Bonn)
+ 1 AuthorsS.A. Krasnolutskii5
Estimated H-index: 5
Amphibetulimus krasnolutskii is known from the Middle Jurassic (Bathonian) Itat Formation of Krasnoyarsk Territory, West Siberia, Russia, by several edentulous and three dentigerous dental fragments, preserving p1, antepenultimate, and ultimate lower molars, and by an upper molar. It is unique among stem therians by widely open trigonids on the posterior lower molars, paraconids that are higher than the metaconids and have keeled mesiolingual vertical crests, pronounced unilateral hypsodonty of ...
Published on Mar 1, 2015in Journal of Mammalian Evolution2.08
Guillermo W. Rougier20
Estimated H-index: 20
(University of Louisville),
Amir S. Sheth1
Estimated H-index: 1
(University of Louisville)
+ 2 AuthorsBrian M. Davis7
Estimated H-index: 7
(University of Louisville)
We describe a new species of the basal mammaliaform Docodon, D. apoxys, sp. nov., represented by three nearly complete dentaries from the Upper Jurassic Morrison Formation of central Colorado. This species differs from other known species of Docodon in the relative heights of the principal molar cusps and in the size of the distal molars. In addition, we attribute a partial rostrum preserving much of the maxilla and most of the premaxilla, bearing a complete incisor and premolar count, to Docodo...
Published on Mar 1, 2015in Journal of Mammalian Evolution2.08
A. V. Lopatin11
Estimated H-index: 11
(RAS: Russian Academy of Sciences),
Alexander Averianov7
Estimated H-index: 7
(SPbU: Saint Petersburg State University)
There are two species of Gobiconodon in the Early Cretaceous Khoboor locality of Mongolia: G. borissiaki Trofimov, 1978, and G. hoburensis (Trofimov, 1978). The smaller G. hoburensis has i2 half the size of i1, double-rooted dp2, and two generations of molariforms (m1-5 and m1r-4r). In the larger G. borissiaki, i2 is about ¾ size of i1, dp2 is single-rooted, and there are three generations of molariforms (m1-5, m1r-5r, m1rr-2rr). In larger G. ostromi Jenkins and Schaff, 1988, there are three mol...
Published on Dec 1, 2013in Palaeobiodiversity and Palaeoenvironments1.07
Pavel P. Skutschas13
Estimated H-index: 13
(SPbU: Saint Petersburg State University)
Mesozoic terrestrial deposits containing diverse vertebrate assemblages are widely distributed in Siberia (central and eastern part of Russia), Middle Asia (Kyrgyzstan, Tajikistan, Turkmenistan and Uzbekistan), and Kazakhstan. Twelve formations of Middle Jurassic (Bathonian) to Late Cretaceous (Campanian) age in the region contain salamanders (six in Middle Asia, two in Siberia and four in Kazakhstan). In contrast to the situation in Euramerica, albanerpetontids are extremely rare in the Mesozoi...
Published on Aug 1, 2013in Nature43.07
Chang-Fu Zhou10
Estimated H-index: 10
,
Shaoyuan Wu9
Estimated H-index: 9
+ 1 AuthorsZhe-Xi Luo38
Estimated H-index: 38
Haramiyids were Mesozoic era animals that until now have been identified only from their distinctive teeth, and are thought to be related to the better-known multituberculates: here the authors describe a haramiyid that is very primitive in terms of its jaw and ankle characteristics, suggesting a lack of relationship to the multituberculates.
Published on Apr 1, 2013in Naturwissenschaften1.84
Alexander Averianov7
Estimated H-index: 7
(SPbU: Saint Petersburg State University),
Thomas Martin26
Estimated H-index: 26
(University of Bonn),
A. V. Lopatin11
Estimated H-index: 11
(RAS: Russian Academy of Sciences)
The endemic South American mammals Meridiolestida, considered previously as dryolestoid cladotherians, are found to be non-cladotherian trechnotherians related to spalacotheriid symmetrodontans based on a parsimony analysis of 137 morphological characters among 44 taxa. Spalacotheriidae is the sister taxon to Meridiolestida, and the latter clade is derived from a primitive spalacolestine that migrated to South America from North America at the beginning of the Late Cretaceous. Meridiolestida sur...
Published on Sep 7, 2010in Acta Geologica Sinica-english Edition
Guillermo W. Rougier20
Estimated H-index: 20
(University of Louisville),
Ji Qiang1
Estimated H-index: 1
,
Michael J. Novacek34
Estimated H-index: 34
(AMNH: American Museum of Natural History)
Western Liaoning of northeastern China is world-renowned for the Mesozoic Jehol biota, especially for yielding many feathered dinosaurs, primitive birds, mammals and fossil angiosperm. This paper describes a complete specimen of a symmetrodont mammal with well-preserved hairs and soft tissue from the basal part of the Yixian Formation in the Sihetun area, Beipiao, western Liaoning. It is significant for understanding the morphology, osteology, phylogeny and life habits of Mesozoic symmetrodont m...
Published on Sep 1, 2010in Paleontological Journal0.72
A. V. Lopatin11
Estimated H-index: 11
(RAS: Russian Academy of Sciences),
Alexander O. Averianov23
Estimated H-index: 23
(RAS: Russian Academy of Sciences)
+ 1 AuthorsSergey V. Leshchinskiy5
Estimated H-index: 5
(Tomsk State University)
New material of Kiyatherium cardiodens Maschenko, Lopatin et Voronkevich, 2002 from the Early Cretaceous Shestakovo 3 locality (Kemerovo Region, Western Siberia) suggest that this taxon belongs to symmetrodont mammals of the family Zhangheotheriidae. Kiyatherium has relatively long and narrow upper and lower molars, with large trigon and trigonid angles (triangularity is approximately as pronounced as in Tinodontidae); a wide and deep Meckel’s groove; a reduced and strongly posteriorly inclined ...
Published on Aug 1, 2010in Doklady Biological Sciences
A. V. Lopatin11
Estimated H-index: 11
(RAS: Russian Academy of Sciences),
Evgeny N. Maschenko10
Estimated H-index: 10
(RAS: Russian Academy of Sciences),
Alexander O. Averianov23
Estimated H-index: 23
(RAS: Russian Academy of Sciences)
were excludedfrom this group, the concept of the taxon Eutriconodonta [1], which corresponds to the infraclass Triconodonta sensu stricto [2], was established. The heterogeneity of this taxon is evident from some characters of this group, including the familiesAmphilestidae and Gobiconodontidae (Repenomamidae) [3, 4]. Phylogenetic analysis corroborated thatAmphilestidae and Gobiconodontidae are closer toancestors of therian mammals than Triconodontidae[5] and suggested the paraphyletic origin of...
Published on Jan 22, 2010
Chun Ling Gao1
Estimated H-index: 1
(AMNH: American Museum of Natural History),
Gregory Wilson21
Estimated H-index: 21
(UW: University of Washington)
+ 3 AuthorsXuri Wang6
Estimated H-index: 6
(AMNH: American Museum of Natural History)
We report the discovery of Juchilestes liaoningensis, a new genus and species of eutriconodont mammal from the Lujiatun Site of the Lower Cretaceous Yixian Formation (123.2 ± 1.0 Ma; Lower Aptian). The holotype preserves a partial skull and full dentition. Among eutriconodonts, its lower dentition is similar to taxa formerly assigned to the paraphyletic group of ‘amphilestids’. Some have considered ‘amphilestid’ molars to represent the structural intermediate between the lower molars of the ‘tri...
Cited By8
Newest
Published on Nov 5, 2017in Historical Biology1.49
Pavel P. Skutschas13
Estimated H-index: 13
(SPbU: Saint Petersburg State University),
Valentina D. Markova1
Estimated H-index: 1
+ 4 AuthorsAlexander O. Averianov23
Estimated H-index: 23
(RAS: Russian Academy of Sciences)
AbstractThe Lower Cretaceous Ilek Formation in Western Siberia (Russia) has yielded various vertebrate fossils, including skeletal remains of dinosaurs. Here we report on a fragmentary theropod egg from the vertebrate locality Shestakovo 3 of the Ilek Formation in Kemerovo Province. We assign the specimen to the oogenus Prismatoolithus (oofamily Prismatoolithidae) as Prismatoolithus ilekensis oosp. nov., on the basis of the following unique combination of characters: ovoid-shaped egg; thin eggsh...
Published on Jun 25, 2019
Alexander O. Averianov23
Estimated H-index: 23
(RAS: Russian Academy of Sciences),
Stepan Ivantsov3
Estimated H-index: 3
(Tomsk State University),
Pavel P. Skutschas13
Estimated H-index: 13
(SPbU: Saint Petersburg State University)
Published on Mar 1, 2019in Journal of Mammalian Evolution2.08
Julia A. Schultz9
Estimated H-index: 9
(U of C: University of Chicago),
Bhart-Anjan S. Bhullar14
Estimated H-index: 14
(Yale University),
Zhe-Xi Luo38
Estimated H-index: 38
(U of C: University of Chicago)
Docodon was the first described docodont, and has long featured prominently in the comparative and functional morphology of mammaliaform mandibles and teeth. We have now re-examined the dental and mandibular fossils of Docodon from Yale Quarry 9 at the Como Bluff site in the Late Jurassic Morrison Formation, using Computed Tomography (CT) scans and 3D image analyses. Our CT study revealed that some features used to distinguish the several Docodon “species” in historical studies many decades ago ...
Published on Jul 25, 2018in PLOS ONE2.78
Alexander O. Averianov23
Estimated H-index: 23
,
Thomas Martin26
Estimated H-index: 26
+ 4 AuthorsDmitry Vitenko1
Estimated H-index: 1
Published on Dec 1, 2017in Geobios1.21
Alexander O. Averianov23
Estimated H-index: 23
(Kazan: Kazan Federal University),
Stepan Ivantsov3
Estimated H-index: 3
(Tomsk State University)
+ 2 AuthorsSergey V. Leshchinskiy5
Estimated H-index: 5
(Tomsk State University)
Abstract Sibirotitan astrosacralis nov. gen., nov. sp., is described based on isolated but possibly associated cervical and dorsal vertebrae, sacrum, and previously published pedal elements from the Lower Cretaceous (Barremian?) Ilek Formation at Shestakovo 1 locality (Kemerovo Province, Western Siberia, Russia). Some isolated sauropod teeth from the Shestakovo 1 locality are referred to the same taxon. The phylogenetic parsimony analyses place Sibirotitan astrosacralis nov. gen., nov. sp., as a...
Published on Sep 1, 2017in Cretaceous Research2.12
Pavel P. Skutschas13
Estimated H-index: 13
(SPbU: Saint Petersburg State University),
Dmitriy D. Vitenko1
Estimated H-index: 1
(SPbU: Saint Petersburg State University)
Abstract There are ten known Lower Cretaceous localities for skeletal remains of choristoderes in Siberia (Russia). Choristoderan remains at all these localities are represented by isolated bones, usually by isolated vertebrae of Choristodera indet. Three choristoderan taxa in two geological units were identified: the non-neochoristodere Khurendukhosaurus sp. (possibly closely related to the long-necked Sino-Japanese hyphalosaurids) from the Murtoi Formation, Transbaikalia; cf. Khurendukhosaurus...
Published on May 1, 2017in Biological Reviews10.29
Jonathan P. Tennant9
Estimated H-index: 9
(Imperial College London),
Philip D. Mannion26
Estimated H-index: 26
(Imperial College London)
+ 2 AuthorsGregory D. Price31
Estimated H-index: 31
(PSU: Plymouth State University)
The Late Jurassic to Early Cretaceous interval represents a time of environmental upheaval and cataclysmic events, combined with disruptions to terrestrial and marine ecosystems. Historically, the Jurassic/Cretaceous (J/K) boundary was classified as one of eight mass extinctions. However, more recent research has largely overturned this view, revealing a much more complex pattern of biotic and abiotic dynamics than has previously been appreciated. Here, we present a synthesis of our current know...
Published on Mar 4, 2017in Journal of Vertebrate Paleontology1.74
Alexander O. Averianov23
Estimated H-index: 23
(RAS: Russian Academy of Sciences),
A. V. Lopatin11
Estimated H-index: 11
(RAS: Russian Academy of Sciences)
+ 3 AuthorsIvan Kuzmin2
Estimated H-index: 2
(SPbU: Saint Petersburg State University)
ABSTRACTBaidabatyr clivosus, gen. et sp. nov. (Multituberculata incertae sedis), is described on the basis of an ultimate upper premolar (P5) from the Lower Cretaceous Ilek Formation at Bol'shoi Kemchug 3 locality in Krasnoyarsk Territory, Russia. The new taxon differs from all known multituberculates by the cusp formula of the ultimate upper premolar (4:5:5), cusps well separated by valleys of flat crown surface, and three roots. It shares with a few non-cimolodontan multituberculates such rare...
Published on Jul 3, 2016in Journal of Vertebrate Paleontology1.74
Hiroshige Matsuoka10
Estimated H-index: 10
(Kyoto University),
Nao Kusuhashi9
Estimated H-index: 9
(Ehime University),
Ian J. Corfe5
Estimated H-index: 5
(UH: University of Helsinki)
ABSTRACTWe describe tritylodontid remains from the Lower Cretaceous Kuwajima Formation (Tetori Group) in central Japan as representing a new genus, Montirictus kuwajimaensis, gen. et sp. nov. Montirictus is a medium-sized tritylodontid genus characterized by upper cheek teeth having the cusp formula 2-2-2 with subequal cusps, buccal and lingual cusps retaining a crescentic shape with both buccal and lingual ridges anteriorly, and ‘V’-shaped buccolingual cross-sections of two anteroposterior groo...