Osteology and reassessment of Dineobellator notohesperus, a southern eudromaeosaur (Theropoda: Dromaeosauridae: Eudromaeosauria) from the latest Cretaceous of New Mexico DOI
Steven E. Jasinski, Robert M. Sullivan,

Aja M. Carter

et al.

The Anatomical Record, Journal Year: 2022, Volume and Issue: 306(7), P. 1712 - 1756

Published: Nov. 7, 2022

Abstract Dromaeosaurids (Theropoda: Dromaeosauridae), a group of dynamic, swift predators, have sparse fossil record, particularly at the end Cretaceous Period. The recently described Dineobellator notohesperus , consisting partial skeleton from Upper (Maastrichtian) New Mexico, is only diagnostic dromaeosaurid to be recovered latest southwestern United States. Reinterpreted and newly material include several caudal vertebrae, portions right radius pubis, an additional ungual, tentatively inferred manual digit III. Unique features, those humerus, unguals, distinguish D . other known dromaeosaurids. This indicates different physical attributes among dromaeosaurids, such as use forearms, strength in hands feet, mobility tail. Several bones holotype exhibit abnormal growth are pathologic features resulting injury or disease. Similar lengths humerus imply Deinonychus were similar size, least regarding length and/or height, although more gracile nature implies was lightly built predator. A new phylogenetic analysis recovers outside previously named clades. Theropod composition Naashoibito Member theropod fauna like found northern Late North American ecosystems. Differences tooth morphologies teeth also not present its environment.

Language: Английский

Theropod teeth palaeodiversity from the uppermost Cretaceous of the South Pyrenean Basin (NE Iberia) and the intra-Maastrichtian faunal turnover DOI Creative Commons
Erik Isasmendi, Manuel Pérez-Pueyo, Miguel Moreno‐Azanza

et al.

Cretaceous Research, Journal Year: 2024, Volume and Issue: 162, P. 105952 - 105952

Published: June 17, 2024

The South Pyrenean Basin has yielded abundant dinosaur and penecontemporaneous vertebrate fossils, becoming one of the most important areas in Europe for study these faunas. studied isolated theropod teeth from Western Tremp Syncline (NE Iberia) were recovered uppermost Maastrichtian (topmost Arén formations). studies conducted have led to identification eight tooth morphotypes, which are referred cf. Paronychodon, Richardoestesia, an abelisaurid, a dromaeosaurid, non-dromaeosaurid paravian. Together with previously reported troodontid ornithuromorph, this increases known palaeobiodiversity area seven taxa. latest fauna is thus composed medium large-sized abelisaurid as well high diversity small-bodied early-branching coelurosaurians avialans, seen other Ibero-Armorican localities. Revision literature concerning theropods domain indicates that, although similar groups present before, during, after intra-Maastrichtian faunal turnover (an event constrained between early late Maastrichtian; lower part C31r C30r/C30n reversal), there changes large avialan assemblages, proportions indeterminate paravian Richardoestesia presence troodontids only recorded post-turnover These suggest that might been affected by event. Nevertheless, further more complete specimens could shed light on effects turnover, affinities Cretaceous theropods.

Language: Английский

Citations

3
Osteology and reassessment of Dineobellator notohesperus, a southern eudromaeosaur (Theropoda: Dromaeosauridae: Eudromaeosauria) from the latest Cretaceous of New Mexico DOI
Steven E. Jasinski, Robert M. Sullivan,

Aja M. Carter

et al.

The Anatomical Record, Journal Year: 2022, Volume and Issue: 306(7), P. 1712 - 1756

Published: Nov. 7, 2022

Abstract Dromaeosaurids (Theropoda: Dromaeosauridae), a group of dynamic, swift predators, have sparse fossil record, particularly at the end Cretaceous Period. The recently described Dineobellator notohesperus , consisting partial skeleton from Upper (Maastrichtian) New Mexico, is only diagnostic dromaeosaurid to be recovered latest southwestern United States. Reinterpreted and newly material include several caudal vertebrae, portions right radius pubis, an additional ungual, tentatively inferred manual digit III. Unique features, those humerus, unguals, distinguish D . other known dromaeosaurids. This indicates different physical attributes among dromaeosaurids, such as use forearms, strength in hands feet, mobility tail. Several bones holotype exhibit abnormal growth are pathologic features resulting injury or disease. Similar lengths humerus imply Deinonychus were similar size, least regarding length and/or height, although more gracile nature implies was lightly built predator. A new phylogenetic analysis recovers outside previously named clades. Theropod composition Naashoibito Member theropod fauna like found northern Late North American ecosystems. Differences tooth morphologies teeth also not present its environment.

Language: Английский

Citations

2