Frogs and salamanders from the Upper Jurassic Morrison Formation (Quarry Nine, Como Bluff) of North America
Frogs and salamanders from the Upper Jurassic Morrison Formation (Quarry Nine, Como Bluff) of North America
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来自北美上侏罗统莫里森组（科莫悬崖九号采石场）的青蛙和蝾螈
DOI：
10.1080/02724634.1993.10011485
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发表时间：
1993
影响因子：
1.4
通讯作者：
A. Milner
中科院分区：
文献类型：
--
作者：
S. Evans;A. Milner
摘要本文报道了在怀俄明州科莫海崖的九号采石场发现的莫里森组中发现的青蛙和蝾螈化石。一根无尾目髂骨被诊断为discoglossid，构成了Enneabatrachus hechti，gen. et sp. nov.的基础。第二根髂骨被诊断为Pelobatid，是Pelobatidae科的最早记录，尽管它在科以下水平尚不确定。蝾螈的椎骨似乎代表了两种形态类型，但都不能被严格诊断。先前描述的无尾类分类群Eobatrachus agilis Marsh和Comobatrachus aeniglium Hecht和Estes以及蝾螈Comonecturoides marshi Hecht和Estes都是基于不确定的元素，并且必须考虑在我们目前的知识状态下命名为dubia。
ABSTRACT Previously undescribed frog and salamander bones from the Morrison Formation, at Quarry Nine, Como Bluff, Wyoming, are reported. One anuran ilium is diagnostically discoglossid and forms the basis of Enneabatrachus hechti, gen. et sp. nov. A second ilium is diagnostically pelobatid and is the earliest record for the family Pelobatidae, although it is indeterminate below family level. Salamander vertebrae appear to represent two morphological types but neither can be diagnosed critically. The previously described anuran taxa Eobatrachus agilis Marsh and Comobatrachus aenigmatis Hecht and Estes and the salamander Comonecturoides marshi Hecht and Estes are all based on non-determinate elements and must be considered nomina dubia at our present state of knowledge.