Redescription of the cheloniellid euarthropod Triopus draboviensis from the Upper Ordovician of Bohemia, with comments on the affinities of Parioscorpio venator

• Published in: Geological magazine Vol. 159; no. 9; pp. 1471 - 1489
• Main Authors: Van Roy, Peter, Rak, Štěpán, Budil, Petr, Fatka, Oldřich
• Format: Journal Article
• Language: English
• Published: Cambridge, UK Cambridge University Press 01.09.2022
• Subjects: Affinity; Apomorphy; Arthropoda; Artiopoda; Beroun Czech Republic; biogenic structures; biostratigraphy; bioturbation; Bohemia; Central Europe; cephalic shield; Cheloniellida; clastic rocks; Czech Republic; Ded Hill; description; Drabovaspis; Europe; Exoskeleton; Exoskeletons; Fossils; framework silicates; Holotypes; ichnofossils; invertebrate; Letna Formation; Morphology; Museums; Ordovician; Original Article; Paleontology; Paleozoic; Parioscorpio venator; Prague Basin; problematic fossils; quartz; Sandbian; sandstone; sedimentary rocks; sedimentary structures; silica minerals; silicates; Silurian; Trilobita; Trilobitomorpha; Triopus; Triopus draboviensis; Upper Ordovician; Vicissicaudata; Zonoscutum; Zonozoe; Bohemia; Czech Republic; Czech Republic; Artiopoda; Drabovaspis; Vicissicaudata; Zonoscutum; Zonozoe; Letná Formation

Cheloniellida is a rare but significant clade of artiopod euarthropods, and a major component of Vicissicaudata alongside aglaspidids. The first cheloniellid to be described was Triopus draboviensis, based on a single specimen from the Upper Ordovician Letná Formation in Bohemia. Because this specim...