Synapsid tracks with skin impressions illuminate the terrestrial tetrapod diversity in the earliest Permian of equatorial Pangea.

Autor: Calábková G; Department of Geology and Paleontology, Moravian Museum, Zelný Trh 6, 659 37, Brno, Czech Republic. gcalabkova@mzm.cz.; Department of Geological Sciences, Faculty of Science, Masaryk University, Kotlářská 267/2, 611 37, Brno, Czech Republic. gcalabkova@mzm.cz., Březina J; Department of Geology and Paleontology, Moravian Museum, Zelný Trh 6, 659 37, Brno, Czech Republic., Nosek V; Department of Archaeology and Museology, Faculty of Arts, Masaryk University, Joštova 220/13, 662 43, Brno, Czech Republic., Madzia D; Institute of Paleobiology, Polish Academy of Sciences, Twarda 51/55, 00-818, Warsaw, Poland. daniel.madzia@gmail.com.
Jazyk: angličtina
Zdroj: Scientific reports [Sci Rep] 2023 Jan 20; Vol. 13 (1), pp. 1130. Date of Electronic Publication: 2023 Jan 20.
DOI: 10.1038/s41598-023-27939-z
Abstrakt: Lower Permian deposits of the Boskovice Basin in the Czech Republic have long been renowned for extraordinarily abundant specimens of discosauriscid seymouriamorphs, some of which showing exceptional preservation, including widespread soft tissues. The only other tetrapods from the strata are represented by rare temnospondyls. However, recent fieldwork in the Asselian (lowermost Permian) of the Boskovice Basin has yielded a diverse assemblage of tetrapod tracks, illuminating a hidden terrestrial tetrapod diversity. Here, we describe well-preserved isolated tracks, manus-pes couples, and a slab with trackways composed of approximately 20 tracks in at least four different directions belonging to early-diverging, or 'pelycosaur-grade', synapsids. The material originates from three localities situated within the Letovice and Padochov formations and is assignable to the ichnotaxon Dimetropus. The best-preserved specimen further shows rare skin impressions, which have not been observed from the hands or feet of early-diverging mammal-line amniotes before. The new material adds to the scarce record of synapsids from the Carboniferous/Permian transitional interval of equatorial Pangea. At the same time, it highlights the significance of the ichnological record of the Boskovice Basin which has long been neglected despite offering evidence for the presence of diverse faunal components that have not been reported from these basinal deposits before.
(© 2023. The Author(s).)
Databáze: MEDLINE
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