Manso, C. L. d. C. & Souza-Lima, W. 2007. Holosalenia bahiensis, um novo equinoide (Echinodermata) do Albiano da bacia de Camamu, Brasil. Revista Brasileira de Paleontologia 10, 27-34.

175970

10.4072/rbp.2007.1.03 [view]

Manso, C.

2007

10(1), 27-34

Publication

A new echinoid species of the genus Holosalenia Smith & Wright is described from Camamu Basin, southern Bahia State, Brazil. The specimens were collected in the bioclastic calcarenite from the Germania Member of Algodoes Formation, which crops out in many points of the Cangaiba and Boipeba islands. These rocks are attributed to the Upper Albian on basis of the presence of the ammonite Elobiceras bahiensis Maury, described from similar rocks found further south. The diagnostics features of Holosalenia bahiensis sp.n. include: apical disc rounded with smooth plates; sutures hardly or not visible; small or absent sutural depressions; and the periproct surrounded by a high ridge. The globular test lacking aboral specialized respiratory tube-feet suggests that H. bahiensis sp.n. would have been epifaunal in a protected subtidal environment , below active normal wave influence. The gently invaginated peristome suggests a kind of alimentation epifaunal generalist on soft substratum.

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