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Issue: Vol. 5264 No. 4: 17 Apr. 2023
Type: Article
Published: 2023-04-17
DOI: 10.11646/zootaxa.5264.4.5
Page range: 545-563
Abstract views: 428
PDF downloaded: 32

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

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).
Crustacea Cretaceous Romualdo Formation Santana Group Fossil Penaeoidea

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.

 

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