A new fossil species of Clypeaster (Echinoidea) from Malaysian Borneo and an overview of the Central Indo-Pacific echinoid fossil record

Autor:	Alana J. Rosenblatt, Morana Mihaljević
Rok vydání:	2018
Předmět:	0106 biological sciences 010506 paleontology Fossil Record biology Paleontology Clypeaster biology.organism_classification 010603 evolutionary biology 01 natural sciences Biodiversity hotspot Geography Taxon Genus Periproct Cenozoic Indo-Pacific 0105 earth and related environmental sciences
Zdroj:	Swiss Journal of Palaeontology. 137:389-404
ISSN:	1664-2384 1664-2376
DOI:	10.1007/s13358-018-0164-y
Popis:	A complete, but fractured and crushed, echinoid corona from early to middle Miocene of Sarawak, Malaysia, is described as a new species, Clypeaster sarawakensis nov. sp. Although similar to modern C. rarispinus, the new species shows a distinct set of characters including petal length, periproct position and gut coiling. The discovery of a new Clypeaster, a genus characterised by a high preservation potential, illustrates that little is known about echinoid evolution and diversification in the Central Indo-Pacific, which features as a biodiversity hotspot since the Oligocene. Besides describing Clypeaster sarawakensis, we also compiled the known Central Indo-Pacific echinoid fossil record and used it to examine the Cenozoic diversity of echinoids. The overall diversity throughout the Cenozoic, and especially the rapid diversity increase at the Oligocene–Miocene boundary, corresponds to diversity trends observed in other taxa from the region.
Databáze:	OpenAIRE
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