プログナトドン


プログナトドン (Prognathodon)

Prognathodon3.jpg

分類



































界
:

動物界 Animalia

門
:

脊索動物門 Chordata

亜門
:

脊椎動物亜門 Vertebrata

綱
:

爬虫綱 Reptilia

亜綱
:

双弓亜綱 Diapsida

目
:

有鱗目 Squamata

亜目
:

トカゲ亜目 Lacertilia

下目
:

オオトカゲ下目 Anguimorpha

上科
:

モササウルス上科 Mosasauroidea

科
:

モササウルス科 Mosasauridae

属
:

プログナトドン属

学名

Prognathodon

プログナトドン（Prognathodon）は、モササウルス科の海生爬虫類。



特徴


全長は8メートルから10メートルほどで、モササウルス類の中では大型の部類に入る。通常のモササウルス類とは異なって鼻先は太く、相当な咬合力であった[1]。ティラノサウルスを上回る力があったとする説もあり、この強力な顎で大型の獲物を捕食していたと考えられている。また、2011年には胃の内部からウミガメのニコルセミスや大型の魚類、頭足類が発見された[2][3]。


プラテカルプスなどと比較して牙と牙の間隔が狭いことも特徴の1つである。



参考文献


[ヘルプ]


  1. ^ 最強のモササウルス、プログナトドン


  2. ^ プログナトドン - 川崎悟司イラスト集


  3. ^ 文藝春秋『海洋生命5億年史 サメ帝国の逆襲』p127,土屋健 著（2018年）





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