A New Crinoid Genus from the Middle Devonian of Iowa, USA (Camerata, Melocrinitidae)

Autor:	Brian J. Witzke, David R. Cordie
Rok vydání:	2017
Předmět:	010506 paleontology biology Paleontology 010502 geochemistry & geophysics Crinoid biology.organism_classification 01 natural sciences Devonian Calyx Genus Column (botany) Ecology Evolution Behavior and Systematics 0105 earth and related environmental sciences
Zdroj:	Paleontological Research. 21:7-13
ISSN:	1880-0068 1342-8144
DOI:	10.2517/2016pr014
Popis:	This study describes a new genus of melocrinitid crinoid from the Middle Devonian, Givetian Stage, of Iowa (subclass Camerata, family Melocrinitidae). The specimen described is assigned to Ronsocrinus gen. nov. within the family Melocrinitidae. Ronsocrinus rabia gen. et sp. nov. possesses a long heteromorphic column, small calyx plates with raised stellate patterns and a well-developed, long anal tube. Species within the family Melocrinitidae do not commonly possess a long anal tube or a spherical cup shape and the family diagnosis is expanded to include species with these characteristics.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::5bfc966d5f2bb5214e7977cde28a986d https://doi.org/10.2517/2016pr014 Zobrazit plný text záznamu