Revision of species Plagiolophus sulcatus Beurlen, 1939 (Decapoda, Brachyura) from the Oligocene of Hungary and Slovenia

Abstract

The crab species Plagiolophus sulcatus Beurlen, 1939 from the Oligocene (Rupelian) Kiscell Clay of Hungary is revised and its holotype is reillustrated for the first time since its original publication. Material from the upper Oligocene (Chattian) of Trbovlje (Slovenia) is here considered conspecific with P. sulcatus. Attribution of this species to the genus Glyphithyreus, as proposed by Hiroaki Karasawa and Carrie Schweitzer in 2004, is confirmed. Glypthithyreus sulcatus differs from congeners in possessing protogastric regions that are subtriangular in outline and in having fewer and coarser tubercles on elevated carapace regions. IzvlečekRevidirana je vrsta rakovice Plagiolophus sulcatus Beurlen, 1939, iz oligocenskih (rupelijskih) kiscellijskih glinenih plasti. Prvič po prvotni objavi je predstavljen holotip in novi primerek iz zgornjega oligocena (chattija) Trbovelj (Slovenija), ki prav tako pripada vrsti P. sulcatus. Potrjena je pripadnost te vrste rodu Glyphithyreus, kar sta predlagala Hiroaki Karasawa in Carrie Schweitzer leta 2004. Glypthithyreus sulcatus se od drugih pripadnikov tega rodu razlikuje po tem, da ima trikotno obliko protogastrične regije in manjše število, a izrazitejše oblikovane bradavice na višjih delih oklepa. GEOLOGIJA 63/1, 83-91, Ljubljana 2020

Miocene and Pliocene amphibians from Hambach (Germany): new evidence for a late Neogene refuge in northwestern Europe

“…In the present contribution we describe wellpreserved decapod specimens from the upper Oligocene fish beds of the Trbovlje Formation, Slovenia. Previously reported occurrence of decapods from the respective formation includes a single specimen of the xanthoid panopeid Glyphithyreus sulcatus (Beurlen, 1939) (Hyžný et al, 2020).…”