Tooth morphotypes shed light on the paleobiodiversity of middle Triassic terrestrial vertebrate ecosystems from ne Iberian Peninsula (southwestern Europe)
Riceetto, Marc (Institut Català de Paleontologia Miquel Crusafont)
Mujal, Eudald (Staatliches Museum für Naturkunde Stuttgart)
Bolet, Arnau (Institut Català de Paleontologia Miquel Crusafont)
de Jaime-Soguero, Chabier (Institut Català de Paleontologia Miquel Crusafont)
De Esteban-Trivigno, Soledad (Institut Català de Paleontologia Miquel Crusafont)
Fortuny, Josep (Institut Català de Paleontologia Miquel Crusafont)

Date:	2025
Abstract:	The Early to Middle Triassic is a key time interval in tetrapod evolution. After the end-Permian biotic crisis, harsh environmental conditions due to global warming and aridity persisted during the Early Triassic. This led to an impoverished biodiversity, especially in equatorial Pangea, until the Middle Triassic, when vertebrate ecosystems re-flourished. The terrestrial European record is characterized by tetrapod communities dominated by temnospondyls and archosauromorphs, followed by a limited presence of lepidosauromorphs, procolophonomorphs and therapsids. Ongoing paleontological sampling at the Anisian Buntsandstein facies of northeastern Iberian Peninsula (southwestern Europe) provides new insights on the vertebrate biodiversity at equatorial paleolatitudes. The Montseny area (Catalan Coastal Ranges) has delivered moderately abundant cranial and postcranial remains in the last decades. Among the known record, dental, mandibular and skull remains are particularly relevant because they provide information on the dietary habits of the concerned taxa. In the present work, eight tooth morphotypes have been identified: two correspond to a capitosaur temnospondyl, one to an archosauromorph, one to an indeterminate diapsid and four to a procolophonid, the latter material referred to a single new taxon, Kapes signus sp. nov. These finds help to fill a gap in the lower Middle Triassic vertebrate biodiversity and distribution in present-day southwestern Europe. Based on dentognathic remains, the oldest Middle Triassic terrestrial tetrapod ecosystems from northeastern Iberia were dominated by capitosaur temnospondyls, followed by much less abundant archosauromorphs, procolophonids and indeterminate diapsids. This contrast with the ichnotaxonomical composition of the study area, denoting paleoenvironmental and/or taphonomic biases in the dental and osteological record.
Grants:	Agencia Estatal de Investigación RYC2021-032857-I Agencia Estatal de Investigación RYC2022-037745-I Agència de Gestió d'Ajuts Universitaris i de Recerca 2021/SGR-01184 Agencia Estatal de Investigación PID2020-117118GB-I00 Agència de Gestió d'Ajuts Universitaris i de Recerca 2020/FI_B00472
Note:	Altres ajuts: CERCA program (ICP) from the Generalitat de Catalunya and the research projects "Evolució dels ecosistemes amb faunes de vertebrats del Permià i el Triàsic de Catalunya" (ref. 2014/100606), "Evolució dels ecosistemes durant la transició Paleozoic-Mesozoic a Catalunya" (ref. CLT009/18/00066) and "El final d'una Era i el sorgiment dels ecosistemes moderns: les faunes de vertebrats del Carbonífer al Triàsic de Catalunya" (ref. ARQ001SOL-167-2022 - CLT0009_22_000020)based at the ICP and financially supported by the Departament de Cultura (Generalitat de Catalunya).
Rights:	Aquest document està subjecte a una llicència d'ús Creative Commons. Es permet la reproducció total o parcial, la distribució, la comunicació pública de l'obra i la creació d'obres derivades, sempre i quan aquestes es distribueixin sota la mateixa llicència que regula l'obra original i es reconegui l'autoria.
Language:	Anglès
Document:	Article ; recerca ; Versió publicada
Subject:	Buntsandstein ; Anisian ; Tetrapod ; Equatorial Pangea ; Procolophonidae
Published in:	Rivista italiana di paleontologia e stratigrafia, Vol. 131, Issue 1 (March 2025) , p. 39-62, ISSN 2039-4942

DOI: 10.54103/2039-4942/22340

24 p, 4.4 MB

The record appears in these collections:
Research literature > UAB research groups literature > Research Centres and Groups (research output) > Experimental sciences > Institut Català de Paleontologia Miquel Crusafont (ICP)
Articles > Research articles
Articles > Published articles