Zapsalis

Zapsalis
Період існування: пізня крейда, 75 млн р. т.
▼
Зуб Zapsalis із формації Мілк Рівер, зубці зблизька
Біологічна класифікація редагувати
Царство: Тварини (Animalia)
Тип: Хордові (Chordata)
Клада: Архозаври (Archosauria)
Клада: Динозаври (Dinosauria)
Ряд: Ящеротазові (Saurischia)
Підряд: Тероподи (Theropoda)
Родина: †Дромеозавриди (Dromaeosauridae)
Підродина: †Dromaeosaurinae
Рід: †Zapsalis
Cope, 1876
Типовий вид
† Zapsalis abradens
Cope, 1876
Вікісховище: Zapsalis

Zapsalis — рід тероподних дромеозаврів. Це зубний таксон, який часто вважається сумнівним через фрагментарний характер скам'янілостей, які включають зуби, але не мають інших останків.

Опис

Зуб Z. abradens плоский лінгвально, без мезіальних зубців і три дистальні зубці на міліметр і має загальну довжину 12 мм. Є три язикові валики й чотири губні[1][2]. Currie & Evans, 2019 діагностували Zapsalis від Saurornitholestes, зазначивши, що тип першого не має мезіальних зубців і є увігнутим апікодистально, і тому «рекомендували, щоб ці два роди трималися окремо»[3]. Другі передщелепні зуби Zapsalis та інших дромеозавридів, можливо, були структурно спеціалізовані для чищення пір’я, як це також видно у деяких овірапторозаврів[3].

Примітки

  1. ↑ Dromaeosaurs. www.theropoddatabase.com. Процитовано 8 червня 2022.
  2. ↑ Cope, E. D. (1876). On some extinct reptiles and Batrachia from the Judith River and Fox Hills beds of Montana. Proceedings of the Academy of natural Sciences of Philadelphia, 340–359.
  3. ↑ а б Currie, Philip J.; Evans, David C. (2020-04). Cranial Anatomy of New Specimens of Saurornitholestes langstoni (Dinosauria, Theropoda, Dromaeosauridae) from the Dinosaur Park Formation (Campanian) of Alberta. The Anatomical Record (англ.). Т. 303, № 4. с. 691—715. doi:10.1002/ar.24241. ISSN 1932-8486. Процитовано 17 вересня 2024.


Tyrannosaurus rex, череп Це незавершена стаття про динозаврів.
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