在巴西白垩纪（阿普第期/阿尔比期）的阿雷里佩盆地发现了新的枝角类化石。

New Dendrobranchiata fossil preserved in the Brazilian Cretaceous (Aptian/Albian) from the Araripe Basin, Piauí State.

机构信息

Pesquisadora visitante no Museu de Paleontologia Plácido Cidade Nuvens; laboratório de Paleontologia e laboratório de Imagem (LAGEM); Universidade Regional do Cariri-URCA; Rua Cel. Antônio Luís; 63100-00; Crato-CE; Brazil..

Laboratório de Paleontologia da Universidade Federal do Piauí (UFPI); Campus Senador Helvídio Nunes de Barros; Rua Cícero Duarte; 905; 64607-670; Picos-PI; Brazil; e Programa de Pós-graduação em Geologia da Universidade Federal do Ceará (UFC)..

出版信息

Zootaxa. 2023 Apr 17;5264(4):545-563. doi: 10.11646/zootaxa.5264.4.5.

DOI:10.11646/zootaxa.5264.4.5

PMID:37518032

Abstract

The fossil shrimp Somalis piauiensis n. gen. n. sp. is a new fossil record of Penaeoidea from the Araripe Basin. The purpose of this study is to describe a new decapod crustacean from the Romualdo Formation of the Santana Group and compare it with other fossil Dendrobranchiata described from this basin. The new fossil is characterized by a carapace with antennal and branchiostegal spines. Long rostrum, with thirteen evident dorsal spines yielding a serrate appearance. The laminar scaphocerite is large with a weakly rounded lateral margin and is longer than the rostrum. The fossil specimen is the first occurrence of shrimp in the Piauí territory.

摘要

化石虾 Somalis piauiensis n. gen. n. sp. 是阿拉里皮盆地磷虾目虾类的一个新的化石记录。本研究的目的是描述一种来自桑塔纳组罗曼杜尔阶的新十足目甲壳类动物，并与该盆地描述的其他化石枝鳃亚目进行比较。新化石的特征是具有带触角和鳃棘刺的甲壳。长的额角，有十三个明显的背刺，呈锯齿状。板状的匙甲很大，侧缘略圆，比额角长。化石标本是在皮奥伊州发现的第一个虾类。