Standard

Dentary–squamosal jaw articulation in a late surviving tritylodontid synapsid from the Early Cretaceous of Western Siberia, Russia. / Аверьянов, Александр; Лопатин, Алексей; Слободин, Дмитрий; Скучас, Павел Петрович; Владимирова, Ольга.

в: Journal of Mammalian Evolution, Том 32, № 3, 32, 01.09.2025.

Результаты исследований: Научные публикации в периодических изданиях › статья › Рецензирование

Harvard

Аверьянов, А, Лопатин, А, Слободин, Д, Скучас, ПП & Владимирова, О 2025, 'Dentary–squamosal jaw articulation in a late surviving tritylodontid synapsid from the Early Cretaceous of Western Siberia, Russia', Journal of Mammalian Evolution, Том. 32, № 3, 32. https://doi.org/10.1007/s10914-025-09775-2

APA

Аверьянов, А., Лопатин, А., Слободин, Д., Скучас, П. П., & Владимирова, О. (2025). Dentary–squamosal jaw articulation in a late surviving tritylodontid synapsid from the Early Cretaceous of Western Siberia, Russia. Journal of Mammalian Evolution, 32(3), [32]. https://doi.org/10.1007/s10914-025-09775-2

Vancouver

Аверьянов А, Лопатин А, Слободин Д, Скучас ПП, Владимирова О. Dentary–squamosal jaw articulation in a late surviving tritylodontid synapsid from the Early Cretaceous of Western Siberia, Russia. Journal of Mammalian Evolution. 2025 Сент. 1;32(3). 32. https://doi.org/10.1007/s10914-025-09775-2

Author

Аверьянов, Александр ; Лопатин, Алексей ; Слободин, Дмитрий ; Скучас, Павел Петрович ; Владимирова, Ольга. / Dentary–squamosal jaw articulation in a late surviving tritylodontid synapsid from the Early Cretaceous of Western Siberia, Russia. в: Journal of Mammalian Evolution. 2025 ; Том 32, № 3.

BibTeX

@article{4f333e3234594e028762670f87b9ea3c,
title = "Dentary–squamosal jaw articulation in a late surviving tritylodontid synapsid from the Early Cretaceous of Western Siberia, Russia",
abstract = "The late Early Cretaceous (Aptian) tritylodontid synapsid Xenocretosuchus sibiricus from Western Siberia, Russia, exhibits a dentary–squamosal contact formed by a distinct condyloid process. This is a new case of independent development of the dentary–squamosal jaw articulation in synapsids, after that observed in derived ictidosaurs and mammaliaforms. The articular process of the dentary is remarkable for its length and is separated by a deep cleft from the condyloid process in Xenocretosuchus. It is hypothesised that the former covered the quadrate and the postdentary bones dorsally. The main function of the quadrate and the postdentary bones was sound transmission, suggesting that the dentary–squamosal articulation played the main role in load bearing in Xenocretosuchus. This is supported by the extreme development of the mandibular middle ear in Xenocretosuchus which may be related to the fossorial adaptations seen in the late surviving tritylodontids.",
keywords = "Craniomandibular joint, Early Cretaceous, Morphology, Russia, Synapsida, Western Siberia",
author = "Александр Аверьянов and Алексей Лопатин and Дмитрий Слободин and Скучас, {Павел Петрович} and Ольга Владимирова",
year = "2025",
month = sep,
day = "1",
doi = "10.1007/s10914-025-09775-2",
language = "English",
volume = "32",
journal = "Journal of Mammalian Evolution",
issn = "1064-7554",
publisher = "Springer Nature",
number = "3",

}

RIS

TY - JOUR

T1 - Dentary–squamosal jaw articulation in a late surviving tritylodontid synapsid from the Early Cretaceous of Western Siberia, Russia

AU - Аверьянов, Александр

AU - Лопатин, Алексей

AU - Слободин, Дмитрий

AU - Скучас, Павел Петрович

AU - Владимирова, Ольга

PY - 2025/9/1

Y1 - 2025/9/1

N2 - The late Early Cretaceous (Aptian) tritylodontid synapsid Xenocretosuchus sibiricus from Western Siberia, Russia, exhibits a dentary–squamosal contact formed by a distinct condyloid process. This is a new case of independent development of the dentary–squamosal jaw articulation in synapsids, after that observed in derived ictidosaurs and mammaliaforms. The articular process of the dentary is remarkable for its length and is separated by a deep cleft from the condyloid process in Xenocretosuchus. It is hypothesised that the former covered the quadrate and the postdentary bones dorsally. The main function of the quadrate and the postdentary bones was sound transmission, suggesting that the dentary–squamosal articulation played the main role in load bearing in Xenocretosuchus. This is supported by the extreme development of the mandibular middle ear in Xenocretosuchus which may be related to the fossorial adaptations seen in the late surviving tritylodontids.

AB - The late Early Cretaceous (Aptian) tritylodontid synapsid Xenocretosuchus sibiricus from Western Siberia, Russia, exhibits a dentary–squamosal contact formed by a distinct condyloid process. This is a new case of independent development of the dentary–squamosal jaw articulation in synapsids, after that observed in derived ictidosaurs and mammaliaforms. The articular process of the dentary is remarkable for its length and is separated by a deep cleft from the condyloid process in Xenocretosuchus. It is hypothesised that the former covered the quadrate and the postdentary bones dorsally. The main function of the quadrate and the postdentary bones was sound transmission, suggesting that the dentary–squamosal articulation played the main role in load bearing in Xenocretosuchus. This is supported by the extreme development of the mandibular middle ear in Xenocretosuchus which may be related to the fossorial adaptations seen in the late surviving tritylodontids.

KW - Craniomandibular joint

KW - Early Cretaceous

KW - Morphology

KW - Russia

KW - Synapsida

KW - Western Siberia

UR - https://www.mendeley.com/catalogue/9ef98f02-544e-305b-a36b-3a41f51736ed/

U2 - 10.1007/s10914-025-09775-2

DO - 10.1007/s10914-025-09775-2

M3 - Article

VL - 32

JO - Journal of Mammalian Evolution

JF - Journal of Mammalian Evolution

SN - 1064-7554

IS - 3

M1 - 32

ER -

ID: 139762856