Triadobatrachus

Triadobatrachus
Thời điểm hóa thạch: Đầu kỷ Trias, 250 triệu năm trước đây
↓
Phân loại khoa học
Giới (regnum)Animalia
Ngành (phylum)Chordata
Lớp (class)Amphibia
Nhánh động vật (zoosectio)Salientia
Họ (familia)†Protobatrachidae
Chi (genus)†Triadobatrachus
Piveteau, 1936
Loài (species)†Triadobatrachus massinoti
Danh pháp hai phần
Triadobatrachus massinoti
Piveteau, 1936

Triadobatrachus là một chi động vật lưỡng cư tuyệt chủng giống ếch, bao gồm một loài duy nhất được biết đến, Triadobatrachus massinoti. Đây là một ví dụ về hóa thạch chuyển tiếp. Sinh vật này sống vào thời kỳ đầu kỷ Trias cách nay 250 triệu năm, tại nơi hiện nay là Madagascar.

Bộ Hóa thạch

Triadobatrachus dài khoảng 10 xentimét (3,9 in), và vẫn còn giữ rất nhiều đặc điểm nguyên thủy, như có mười bốn đốt xương sống, trong khi ếch hiện đại chỉ có từ bố tới chín đốt sống. Sáu trong số các đốt xương sống đó hiện diện dưới dạng đuôi ngắn, thứ con vật này vẫn có cả khi đã trưởng thành. Nó có lẽ có thể bơi bằng chân sau, mặc dù không nhảy như ếch hiện đại. Hộp sọ của nó giống với ếch hiện đại.[1]

Tham khảo

Wikimedia Commons có thêm hình ảnh và phương tiện truyền tải về Triadobatrachus.
  1. ^ Palmer, D. biên tập (1999). The Marshall Illustrated Encyclopedia of Dinosaurs and Prehistoric Animals. London: Marshall Editions. tr. 56. ISBN 1-84028-152-9.
  • Benes, Josef. Prehistoric Animals and Plants. Pg. 114. Prague: Artia, 1979.

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