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An archosauromorph dominated ichnoassemblage in fluvial settings from the late Early Triassic of the Catalan Pyrenees (NE Iberian Peninsula).
PLoS One. 2017; 12(4):e0174693.Plos

Abstract

The vertebrate recovery after the end-Permian mass extinction can be approached through the ichnological record, which is much more abundant than body fossils. The late Olenekian (Early Triassic) tetrapod ichnoassemblage of the Catalan Pyrenean Basin is the most complete and diverse of this age from Western Tethys. This extensional basin, composed of several depocenters, was formed in the latest phases of the Variscan orogeny (Pangea breakup) and was infilled by braided and meandering fluvial systems of the red-beds Buntsandstein facies. Abundant and diverse tetrapod ichnites are recorded in these facies, including Prorotodactylus mesaxonichnus isp. nov. (tracks possibly produced by euparkeriids), cf. Rotodactylus, at least two large chirotheriid morphotypes (archosauriform trackmakers), Rhynchosauroides cf. schochardti, two other undetermined Rhynchosauroides forms, an undetermined Morphotype A (archosauromorph trackmakers) and two types of Characichnos isp. (swimming traces, here associated to archosauromorph trackmakers). The Pyrenean ichnoassemblage suggests a relatively homogeneous ichnofaunal composition through the late Early Triassic of Central Pangea, characterized by the presence of Prorotodactylus and Rotodactylus. Small archosauromorph tracks dominate and present a wide distribution through the different fluviatile facies of the Triassic Pyrenean Basin, with large archosaurian footprints being present in a lesser degree. Archosauromorphs radiated and diversified through the Triassic vertebrate recovery, which ultimately lead to the archosaur and dinosaur dominance of the Mesozoic.

Authors+Show Affiliations

Departament de Geologia, Universitat Autònoma de Barcelona, Bellaterra, Spain.Centre de Recherches en Paléobiodiversité et Paléoenvironnements, Muséum National d'Histoire Naturelle, Bâtiment de Paléonologie, Paris, France. Institut Català de Paleontologia Miquel Crusafont, ICTA-ICP Building, Cerdanyola del Vallès, Spain.Institut Català de Paleontologia Miquel Crusafont, ICTA-ICP Building, Cerdanyola del Vallès, Spain.Departament de Geologia, Universitat Autònoma de Barcelona, Bellaterra, Spain.Departament de Geologia, Universitat Autònoma de Barcelona, Bellaterra, Spain.

Pub Type(s)

Journal Article

Language

eng

PubMed ID

28423005

Citation

Mujal, Eudald, et al. "An Archosauromorph Dominated Ichnoassemblage in Fluvial Settings From the Late Early Triassic of the Catalan Pyrenees (NE Iberian Peninsula)." PloS One, vol. 12, no. 4, 2017, pp. e0174693.
Mujal E, Fortuny J, Bolet A, et al. An archosauromorph dominated ichnoassemblage in fluvial settings from the late Early Triassic of the Catalan Pyrenees (NE Iberian Peninsula). PLoS One. 2017;12(4):e0174693.
Mujal, E., Fortuny, J., Bolet, A., Oms, O., & López, J. Á. (2017). An archosauromorph dominated ichnoassemblage in fluvial settings from the late Early Triassic of the Catalan Pyrenees (NE Iberian Peninsula). PloS One, 12(4), e0174693. https://doi.org/10.1371/journal.pone.0174693
Mujal E, et al. An Archosauromorph Dominated Ichnoassemblage in Fluvial Settings From the Late Early Triassic of the Catalan Pyrenees (NE Iberian Peninsula). PLoS One. 2017;12(4):e0174693. PubMed PMID: 28423005.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - An archosauromorph dominated ichnoassemblage in fluvial settings from the late Early Triassic of the Catalan Pyrenees (NE Iberian Peninsula). AU - Mujal,Eudald, AU - Fortuny,Josep, AU - Bolet,Arnau, AU - Oms,Oriol, AU - López,José Ángel, Y1 - 2017/04/19/ PY - 2016/12/01/received PY - 2017/02/21/accepted PY - 2017/4/20/entrez PY - 2017/4/20/pubmed PY - 2017/4/26/medline SP - e0174693 EP - e0174693 JF - PloS one JO - PLoS One VL - 12 IS - 4 N2 - The vertebrate recovery after the end-Permian mass extinction can be approached through the ichnological record, which is much more abundant than body fossils. The late Olenekian (Early Triassic) tetrapod ichnoassemblage of the Catalan Pyrenean Basin is the most complete and diverse of this age from Western Tethys. This extensional basin, composed of several depocenters, was formed in the latest phases of the Variscan orogeny (Pangea breakup) and was infilled by braided and meandering fluvial systems of the red-beds Buntsandstein facies. Abundant and diverse tetrapod ichnites are recorded in these facies, including Prorotodactylus mesaxonichnus isp. nov. (tracks possibly produced by euparkeriids), cf. Rotodactylus, at least two large chirotheriid morphotypes (archosauriform trackmakers), Rhynchosauroides cf. schochardti, two other undetermined Rhynchosauroides forms, an undetermined Morphotype A (archosauromorph trackmakers) and two types of Characichnos isp. (swimming traces, here associated to archosauromorph trackmakers). The Pyrenean ichnoassemblage suggests a relatively homogeneous ichnofaunal composition through the late Early Triassic of Central Pangea, characterized by the presence of Prorotodactylus and Rotodactylus. Small archosauromorph tracks dominate and present a wide distribution through the different fluviatile facies of the Triassic Pyrenean Basin, with large archosaurian footprints being present in a lesser degree. Archosauromorphs radiated and diversified through the Triassic vertebrate recovery, which ultimately lead to the archosaur and dinosaur dominance of the Mesozoic. SN - 1932-6203 UR - https://www.unboundmedicine.com/medline/citation/28423005/An_archosauromorph_dominated_ichnoassemblage_in_fluvial_settings_from_the_late_Early_Triassic_of_the_Catalan_Pyrenees__NE_Iberian_Peninsula__ L2 - https://dx.plos.org/10.1371/journal.pone.0174693 DB - PRIME DP - Unbound Medicine ER -