First Discovery of the Spinicaudatan Genus Carapacestheria Shen, 1994 in Asia
First Discovery of the Spinicaudatan Genus Carapacestheria Shen, 1994 in Asia
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DOI：
10.2517/pr220025
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发表时间：
2023-04
影响因子：
0.9
通讯作者：
Gang Li
中科院分区：
文献类型：
--
作者：
Gang Li
抽象的。本文报道了产于南极中侏罗世上、下统的棘尾蛤属Carapacestheria Shen，1994。后来，在阿根廷中侏罗世和英国白垩纪最低层有报道。本文报道了一新种，苍山甲Carapacestheriacangshanensissp. nov.蓬莱镇组是中国西南地区上侏罗统蓬莱镇组的一个重要沉积层。新种的近方形甲壳具有明显的网状结构，从中型网状结构过渡到放射状的网状结构。多角形细胞内和细胞间有斑点。根据其地质范围和地理分布，Carapacestheria最早出现在南极洲，后来在晚侏罗世出现在北方半球。
Abstract. The rare clam shrimp (spinicaudatan) genus Carapacestheria Shen, 1994 was originally described from the upper Lower–lower Middle Jurassic of Antarctica. Later, it was reported from the Middle Jurassic of Argentina and the lowest Cretaceous of the United Kingdom. Here, a new species, Carapacestheria cangshanensis sp. nov., is described from the Upper Jurassic Penglaizhen Formation in southwestern China. The subquadrate-shaped carapace of the new species has a distinct ornamentation pattern, which transitions from medium-sized reticulations to radial lirae. There are punctae within the polygonal cells and between the lirae. According to its geological range and geographical distribution, Carapacestheria first occurred in Antarctica, and later appeared in the northern hemisphere during the Late Jurassic.