A new limulid genus from the Strelovec Formation (Middle Triassic, Anisian) of northern Slovenia

Autor:	Matija Križnar, Primož Miklavc, Russell D. C. Bicknell, Bogomir Celarc, Tomaž Hitij, Jure Žalohar
Rok vydání:	2019
Předmět:	0106 biological sciences Morphometrics 010506 paleontology Extinction biology Geology biology.organism_classification Eonothem 010603 evolutionary biology 01 natural sciences Horseshoe crab Paleontology Taxon Geography Genus Phanerozoic Ordovician 0105 earth and related environmental sciences
Zdroj:	Geological Magazine. 156:2017-2030
ISSN:	1469-5081 0016-7568
Popis:	Horseshoe crabs are an archetypal chelicerate group with a fossil record extending back to Early Ordovician time. Although extensively studied, the group generally has a low diversity across the Phanerozoic Eonothem. Here, we expand the known diversity of true horseshoe crabs (Xiphosurida) by the description of a new taxon from the Middle Triassic Strelovec Formation of the Slovenian Alps. The mostly complete fossil is preserved as an external mould and assigned to the family Limulidae Zittel, 1881 asSloveniolimulus rudkini, n. gen., n. sp. The use of landmark and semilandmark geometric morphometrics is explored to corroborate the systematic palaeontology and suggests that the new genus and species are valid. We also provide the first quantitative evidence for the extensive diversity of Triassic horseshoe crabs. We suggest that Triassic horseshoe crabs likely filled many ecological niches left vacant after the end-Permian extinction.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::c3f141db7efe2cd9202994c5de7752dd https://doi.org/10.1017/s0016756819000323 Zobrazit plný text záznamu