一种来自巴西东北部阿拉里皮盆地罗穆阿尔多组白垩纪（阿尔比阶）的新化石十足目虾类（甲壳纲：十足目）。

A new fossil caridean shrimp (Crustacea: Decapoda) from the Cretaceous (Albian) of the Romualdo Formation, Araripe Basin, northeastern Brazil.

作者信息

Santana William, Pinheiro Allysson P, Da Silva Caroline M R, Saraiva Antonio Álamo

机构信息

Universidade Sagrado Coração--USC, Pró-Reitoria de Pesquisa e Pós-Graduação, Rua Irmã Arminda, 10-50, Jd. Brasil, 17011- 160, Bauru, SP Brasil.

出版信息

Zootaxa. 2013;3620:293-300. doi: 10.11646/zootaxa.3620.2.7.

DOI:10.11646/zootaxa.3620.2.7

PMID:26120711

Abstract

A new fossil caridean shrimp, Kellnerius jamacaruensis n. gen. n. sp., of the early Cretaceous (Albian) from the Romualdo Formation, Araripe Basin, northeastern Brazil is described and illustrated. The new species is compared to known fossil palaemonids found in Brazil. Kellnerius jamacaruensis n. gen. n. sp. is easily differentiated from the other palaemonids by a rostrum with 5 spines, an enlarged scaphocerite that is longer than the rostrum, and a third somite with a distinct groove in the tergite that does not extend to the pleurite.

摘要

描述并展示了一种来自巴西东北部阿拉里皮盆地罗穆阿尔多组早白垩世（阿尔比阶）的新化石十足目虾类——雅马卡鲁凯氏虾（Kellnerius jamacaruensis），新属新种。将该新物种与巴西发现的已知化石长臂虾科物种进行了比较。雅马卡鲁凯氏虾新属新种很容易与其他长臂虾科物种区分开来，其特征为：具5个刺的吻部、比吻部长的扩大的鳞片、以及第三体节的背板上有一条不延伸至侧板的明显凹槽。