A Three-Dimensionally Preserved Frog (Amphibia, Anura) from the Lower Cretaceous Kuwajima Formation, Tetori Group, Ishikawa Prefecture, Japan
A Three-Dimensionally Preserved Frog (Amphibia, Anura) from the Lower Cretaceous Kuwajima Formation, Tetori Group, Ishikawa Prefecture, Japan
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DOI：
10.2517/pr210031
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发表时间：
2023-01
影响因子：
0.9
通讯作者：
Ayano Mizukami;R. Matsumoto;Ryoji Wani;S. Evans
中科院分区：
文献类型：
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作者：
Ayano Mizukami;R. Matsumoto;Ryoji Wani;S. Evans
抽象。日本铁取群早白垩世岛组已产出多种水生和陆生脊椎动物，但丽桑菲阶的记录仅限于阿班纳贝托蒂和一种孤立的蛙的长骨。在这里，我们提供了第一份报告的相关青蛙标本从Tetori集团。该标本由几个头骨和几个后颅骨组成，包括股骨、髂骨和椎骨。这种新的Tetori蛙区别于先前报道的早白垩世亚洲属，中国的Liaobatrachus，日本的Hyogobatrachus和Tambabatrachus，具有斧形的骶骨骨突和后部逐渐变细的尾柱，背嵴发育不全。对这种新材料的系统发育分析表明，它是一种非新蛙，可能与以前描述的中国和日本分类群有关，但需要更完整的材料来确定其亲缘关系。
Abstract. The Early Cretaceous Kuwajima Formation, Tetori Group, Japan has yielded various aquatic and terrestrial vertebrates, but lissamphibian records are limited to albanerpetontids and an isolated longbone of a frog. Here we provide the first report of an associated frog specimen from the Tetori Group. The specimen is composed of a few skull elements and several postcranial bones, including the femur, ilium, and vertebrae. This new Tetori frog is distinguished from the previously reported Early Cretaceous Asian genera, Liaobatrachus from China, and Hyogobatrachus and Tambabatrachus from Japan, in having hatchet-shaped sacral diapophyses and a posteriorly tapering urostyle with a weakly developed dorsal crest. Phylogenetic analysis of this new material places it as a non-neobatrachian frog that may be related to previously described Chinese and Japanese taxa, but more complete material would be needed to establish its affinities with confidence.