Mandibular anatomy of a new specimen of a prozostrodontian cynodont (Eucynodontia: Probainognathia) from the Upper Triassic of Brazil

The Science of Nature, Год журнала: 2025, Номер 112(1)

Опубликована: Янв. 14, 2025

Язык: Английский

Ontogeny of a Brazilian Late Triassic Traversodontid (Cynodontia, Cynognathia): Anatomical and Paleoecological Implications

Journal of Morphology, Год журнала: 2025, Номер 286(4)

Опубликована: Апрель 1, 2025

ABSTRACT Investigating the developmental patterns of extinct species provides valuable insights into their anatomy, biology and ecomorphological adaptations. Research on ontogeny non‐mammaliaform cynodonts has offered significant contributions to our understanding these aspects. Here, we aim describe discuss intraspecific ontogenetic variation skull Brazilian traversodontid Siriusgnathus niemeyerorum (Candelária Sequence, Upper Triassic). We evaluated an series through qualitative comparison allometric analyses using cranial measures. Our findings reveal several trends during growth, including a relative increase in rostrum length, decrease orbit size, changes zygomatic arch temporal fenestra proportions. These patterns, when analyzed context adductor musculature, may be correlated with feeding behaviour, similar those described for gomphodontosuchine Exaeretodon argentinus . also report ornamentation, bone fusion, suture complexity throughout ontogeny. Overall, this study greater S. , contributing knowledge its variation. The possible ecological implications highlight importance studies elucidating taxa.

Язык: Английский

THE POSTCRANIAL SKELETON OF LUANGWA SUDAMERICANA (TRAVERSODONTIDAE: CYNODONTIA) FROM THE MIDDLE-LATE TRIASSIC OF SOUTHERN BRAZIL

Journal of South American Earth Sciences, Год журнала: 2025, Номер unknown, С. 105546 - 105546

Опубликована: Апрель 1, 2025

Язык: Английский