New Early Cretaceous clam shrimps (Spinicaudata) from uppermost Bouhedma Formation of northern Chotts range, southern Tunisia: Taxonomy, stratigraphy and palaeoenvironmental implications

Autor:	Mohamed Soussi, Yassine Houla, Walid Ben Ali, Mohamed Ouaja, Kamel Boukhalfa, Xiao Teng, Gang Li
Rok vydání:	2017
Předmět:	010506 paleontology Aptian biology Paleontology North africa 010502 geochemistry & geophysics biology.organism_classification Inner mongolia 01 natural sciences Cretaceous Clam shrimp Taxonomy (biology) East Asia Geology 0105 earth and related environmental sciences
Zdroj:	Cretaceous Research. 72:124-133
ISSN:	0195-6671
DOI:	10.1016/j.cretres.2016.12.014
Popis:	The fossil clam shrimp genus Ordosestheria was originally described from the Lower Cretaceous (Aptian) Jingchuan Formation in Inner Mongolia, northwestern China. The species taxonomically described in this paper as Ordosestheria chottsensis sp. nov. was recovered from the uppermost Bouhedma Formation in the northern Chotts range of southern Tunisia. The early Barremian occurrence of the genus in Tunisia suggests that ordosestheriids have most likely originated in North Africa and then migrated to East Asia in the Aptian. Moreover, the occurrence of fossil spinicaudatans in two horizons respectively from the Bouhedma and Sidi Aich formations indicates the interaction of freshwater and marine conditions that characterized the northern African margin as part of widespread complex paralic environments over the Chotts and Gafsa areas during the Barremian.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::2d09654040a1aea81ced034a3fae94d6 https://doi.org/10.1016/j.cretres.2016.12.014 Zobrazit plný text záznamu Full Text from ScienceDirect