J 2022

Evidence of large terrestrial seymouriamorphs in the lowermost Permian of the Czech Republic

CALÁBKOVÁ, Gabriela; Jakub BŘEZINA a Daniel MADZIA

Základní údaje

Originální název

Evidence of large terrestrial seymouriamorphs in the lowermost Permian of the Czech Republic

Autoři

CALÁBKOVÁ, Gabriela; Jakub BŘEZINA a Daniel MADZIA

Vydání

Papers in Palaeontology, Wiley, 2022, 2056-2799

Další údaje

Jazyk

angličtina

Typ výsledku

Článek v odborném periodiku

Obor

10506 Paleontology

Stát vydavatele

Spojené státy

Utajení

není předmětem státního či obchodního tajemství

Odkazy

Impakt faktor

Impact factor: 2.300

Kód RIV

RIV/00216224:14310/22:00125604

Organizační jednotka

Přírodovědecká fakulta

UT WoS

000773451300001

EID Scopus

2-s2.0-85128786786

Klíčová slova anglicky

Discosauriscidae; Seymouriamorpha; Boskovice Basin; Permo-Carboniferous; fossil tracks

Štítky

Příznaky

Mezinárodní význam, Recenzováno
Změněno: 23. 1. 2023 11:32, Mgr. Gabriela Calábková, Ph.D.

Anotace

V originále

Lower Permian strata of the Boskovice Basin in the Czech Republic have yielded hundreds of largely complete seymouriamorph individuals, some of which are exceptionally preserved and have noticeable soft tissues, such as external gills and eye structures. The vast majority of these finds are referable to Discosauriscus austriacus, and almost exclusively represent larvae and juveniles tied to aquatic environments. Only one of the specimens discovered to date has been interpreted as an early adult, although late juvenile and early sub-adult stages have been proposed for it as well. Regardless, no other seymouriamorph adults have been reported from the Boskovice Basin so far. Here we present the first comprehensive assessment of seymouriamorph tracks and a trackway from the Asselian (lowermost Permian) of the Boskovice Basin. The morphology of the tracks is congruent with that of the ichnotaxon Amphisauropus and indicates an attribution to Discosauriscidae or that they belong to as yet unrecognized large seymouriamorphs. All tracks were made by individuals much larger than the largest discosauriscid known from bodily preserved material and are interpreted as those of adults tied to terrestrial environments, thus apparently documenting a habitat shift that occurred relatively late in the ontogenetic development of these seymouriamorphs. Furthermore, the largest track is preserved in extraordinary detail and includes soft part impressions such as digital, palmar and plantar flexion creases, making the specimen one of the best preserved seymouriamorph tracks described to date. Finally, one of the tracks originates from the lowermost Asselian and is therefore among the oldest known records of seymouriamorphs worldwide.