Chondrichthyan teeth from the Early Triassic Paris Biota (Bear Lake County, Idaho, USA)

Romano, Carlo; Argyriou, Thodoris; Krumenacker, L. J.

doi:10.1016/j.geobios.2019.04.001

Cited by 10 publications

(3 citation statements)

References 47 publications

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“…It comprises almost all the clades of the Modern evolutionary fauna. It yielded algae, sponges (Botting et al, 2019), brachiopods, bivalves, echinoderms (Saucède et al, 2019; Thuy et al, 2019), cephalopods (Doguzhaeva et al, 2018; Brayard et al, 2019), vertebrate remains and coprolites (Romano et al, 2019), and arthropods (Lerner et al, 2017; Charbonnier et al, 2019; Laville et al, 2021). Among arthropods, many well-preserved decapods (an order of crustaceans characterized, among others, by the presence of 5 pairs of walking appendages) were uncovered.…”

Section: Introductionmentioning

confidence: 99%

The Paris Biota decapod (Arthropoda) fauna and the diversity of Triassic decapods

Smith

Charbonnier²,

Jenks³

et al. 2022

J. Paleontol.

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We describe here the early Spathian (Early Triassic) Paris Biota decapod fauna from the western USA basin. This fauna contains two taxa of Aegeridae (Dendobranchiata), namely Anisaeger longirostrus n. sp. and Aeger sp. that are the oldest known representatives of their family, thus extending its temporal range by 5 Myr back into the Early Triassic. This fauna also includes two representatives of Glypheida (Pleocyemata) with Litogaster turnbullensis and Pemphix krumenackeri n. sp., confirming for the former and extending for the latter the temporal ranges of their respective superfamilies back to the Early Triassic. Overall, the Paris Biota decapods are some of the oldest known representatives of Decapoda, filling in an important gap in the evolutionary history of this group, especially during the Triassic that marks the early diversification of this clade. Additionally, we compile and provide overviews for all known Triassic decapods, which leads to the revision of four species of Middle and Late Triassic Aegeridae, and to a revised family assignment of a Middle Triassic Glypheida. Based on this refined dataset, we also investigate decapod diversity throughout the Triassic. We show that the apparent increase in decapod taxonomic richness is probably driven by the heterogeneity of the fossil record and/or sampling effort, and that the decapod alpha diversity is actually relatively high as soon as the Early Triassic and remains rather stable throughout the Triassic. UUID: http://zoobank.org/0f435f27-1767-473d-955c-57fe869faa0f

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Section: Introductionmentioning

confidence: 99%

The Paris Biota decapod (Arthropoda) fauna and the diversity of Triassic decapods

Smith

Charbonnier²,

Jenks³

et al. 2022

J. Paleontol.

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“…1.4), probably plate-bound (Ware et al, 2011), but the region to the west of the site was marked by terranes and volcanism (Poole and Wardlaw, 1978; Wyld, 2000). The relationships between the study site and the western USA epicontinental sea (= Sonoma Foreland Basin), from which the slightly younger fish occurrences in northeast Nevada and Idaho were described (e.g., Romano et al, 2012, 2017, in press), are difficult to reconstruct due to the complex tectonic context (Page, 1959; Wyld, 2000). The lower Candelaria Formation was deposited in a moderately deep outer shelf setting, in a basinal trough characterized by high sedimentation rates (Poole and Wardlaw, 1978).…”

Section: Geological Settingmentioning

confidence: 99%

“…There are a couple of other, mostly younger (Smithian/Spathian), marine occurrences of osteichthyan and chondrichthyan fishes in the western United States, such as in central and northeast Nevada (e.g., Koot, 2013; Romano et al, 2017), southeast Idaho (e.g., Goddard, 1907; Romano et al, 2012, 2017, in press), Utah, and California (Koot, 2013). In contrast to most of these sites, fish fossils occur relatively abundantly in the Candelaria Hills.…”

Section: Diversity and Body Size Of Early Triassic Bony Fishes: Statementioning

confidence: 99%

Marine Early Triassic Actinopterygii from the Candelaria Hills (Esmeralda County, Nevada, USA)

et al. 2019

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A new locality for low-latitudinal, Early Triassic fishes was discovered in the Candelaria Hills, southwestern Nevada (USA). The fossils are derived from the lower Candelaria Formation, which was deposited during the middle–late Dienerian (late Induan), ca. 500 ka after the Permian-Triassic boundary mass extinction event. The articulated and disarticulated Osteichthyes (bony fishes), encompassing both Actinistia (coelacanths) and Actinopterygii (ray-fins), are preserved in large, silicified concretions that also contain rare coprolites. We describe the first actinopterygians from the Candelaria Hills. The specimens are referred toPteronisculus nevadanusnew species (Turseoidae?),Ardoreosomus occidentalisnew genus new species (Ptycholepidae), the stem neopterygianCandelarialepis argentusnew genus new species (Parasemionotidae), and Actinopterygii indet. representing additional taxa.Ardoreosomusn. gen. resembles other ptycholepids, but differs in its more angulate hyomandibula and lack of an elongate opercular process.Candelarialepisn. gen. is one of the largest parasemionotids, distinguished by its bipartite preopercle and scale ornamentation. Presented new species belong to genera (Pteronisculus) or families (Ptycholepidae, Parasemionotidae) that radiated globally after the mass extinction, thus underlining the striking similarities between Early Triassic (pre-Spathian) osteichthyan assemblages. The current data suggest that the diversity of low-latitudinal, Early Triassic bony fishes may have been greater than indicated thus far by the fossil record, probably due to sampling or taphonomic failure. All 24 fossils from the Candelaria Hills represent mid-sized or large osteichthyans, confirming the obvious absence of very small species (≤ 10 cm adult body length) in the beginning of the Mesozoic Era—even in low latitudes.UUID:http://zoobank.org/6a66ac96-d6b7-4617-94db-5a93cdb14215

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Deciphering the exceptional preservation of the Early Triassic Paris Biota (Bear Lake County, Idaho, USA)

Iniesto

Thomazo

Fara

et al. 2019

Geobios

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Chondrichthyan teeth from the Early Triassic Paris Biota (Bear Lake County, Idaho, USA)

Cited by 10 publications

References 47 publications

The Paris Biota decapod (Arthropoda) fauna and the diversity of Triassic decapods

The Paris Biota decapod (Arthropoda) fauna and the diversity of Triassic decapods

Marine Early Triassic Actinopterygii from the Candelaria Hills (Esmeralda County, Nevada, USA)

Deciphering the exceptional preservation of the Early Triassic Paris Biota (Bear Lake County, Idaho, USA)

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