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愛氏角龍屬

爱氏角龙属
化石时期:上白堊紀 77 Ma
无效状况
科学分类 编辑
界: 动物界 Animalia
门: 脊索动物门 Chordata
纲: 蜥形纲 Sauropsida
总目: 恐龍總目 Dinosauria
目: 鸟臀目 Ornithischia
科: 角龙科 Ceratopsidae
亚科: 尖角龍亞科 Centrosaurinae
族: 大鼻角龙族 Nasutoceratopsini
属: 爱氏角龙属 Avaceratops
Dodson, 1986
模式種
拉莫斯愛氏角龍
Avaceratops lammersi

Dodson, 1986

愛氏角龍屬學名Avaceratops)是種小型的角龍科恐龍,生活於上白堊紀坎帕階美國西北部。

發現及物種

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愛氏角龍的骨架模型
愛氏角龍

在1981年,Eddie Cole在美國蒙大拿州的朱迪斯河組發現牠們的化石[1],並於1986年由彼得·達德森(Peter Dodson)所命名[2]模式種拉莫斯愛氏角龍A. lammersi),屬名是以Eddie Cole的妻子Ava來命名,而種名是為紀念發現化石土地的地主Lammers家庭。

這些化石是散佈在一個河道沉積層,有可能是這隻愛氏角龍死後,屍體被河流沖刷到沙洲[1]

分類

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愛氏角龍屬於角龍科,這是一群植食性恐龍,有着類似鸚鵡的喙狀嘴,生存於白堊紀北美洲亞洲。所有的角龍類恐龍在白堊紀末期滅絕。

愛氏角龍在角龍科內的位置不詳。牠是小型的角龍科恐龍,虽有著實心的頭盾,但却沒有其他角龍科恐龙的洞孔,所以牠可能是三角龍的祖先,或是在尖角龍亞科角龍亞科之間[3]

食性

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就像其他角龍科,愛氏角龍是植食性恐龍。在白堊紀,開花植物的地理範圍有限,所以愛氏角龍可能以當時的優勢植物為食,例如:蕨類蘇鐵科松科為食物。牠是用那鋒利的喙狀嘴來咬斷葉子的。

參考資料

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註腳

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  1. ^ 1.0 1.1 "Avaceratops." In: Dodson, Peter & Britt, Brooks & Carpenter, Kenneth & Forster, Catherine A. & Gillette, David D. & Norell, Mark A. & Olshevsky, George & Parrish, J. Michael & Weishampel, David B. The Age of Dinosaurs. Publications International, LTD. p. 129. ISBN 978-0-7853-0443-2.
  2. ^ Dodson, P. The Horned Dinosaurs. Princeton University Press, Princeton, New Jersey. 1996. ISBN 978-0-691-05900-6 (英语). 
  3. ^ Penkalski, P & Dodson, P. The morphology and systematics of Avaceratops, a primitive horned dinosaur from the Judith River Formation (Late Campanian) of Montana, with the description of a second skull.. Journal of Vertebrate Paleontology. 1999, 19 (4): 692–711 (英语). 

書目

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  • Dodson, P. Avaceratops lammersi: a new ceratopsid from the Judith River Formation of Montana.. Proceedings of the Academy of Natural Sciences of Philadelphia. 1986, 138 (2): 305–317 (英语). 
  • The Humongous Book of Dinosaurs, published by Stewart Tabori & Chang

外部連結

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愛氏角龍屬
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