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A new species of early-diverging Sauropodiformes from the Lower Jurassic Fengjiahe Formation of Yunnan Province, China.
Sci Rep. 2020 07 03; 10(1):10961.SR

Abstract

Sauropodomorpha were herbivorous saurischian dinosaurs that incorporate Sauropoda and early-diverging sauropodomorphs. The oldest sauropodomorph remains are known from Late Triassic deposits, most of them Gondwanan. The Laurasian record comprises some Triassic forms, but the bulk is Jurassic in age. Among the 14 Jurassic non-sauropodan sauropodomorphs from Laurasia described in the past, 8 are from China. Here we describe a new non-sauropodan sauropodomorph, Irisosaurus yimenensis gen. et sp. nov., from the Early Jurassic Fengjiahe Formation of China. Nearly all of the non-sauropodan sauropodomorph genera currently known from China were first reported from the Lufeng Formation. The Fengjiahe Formation is its Southern equivalent, bringing a fauna similar to that of the Lufeng Formation to light. The new genus is defined based on an incomplete but unique maxilla, with a premaxillary ramus higher than long prior to the nasal process, a large and deep neurovascular foramen within the perinarial fossa, and a deep perinarial fossa defined by a sharp rim. Phylogenetic analysis places Irisosaurus at the very base of Sauropodiformes, as the sister-taxon of the Argentinean genus Mussaurus. This specimen adds to a growing assemblage of Chinese Jurassic non-sauropodan sauropodomorphs that offers new insight into the Laurasian evolution of this clade.

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Authors+Show Affiliations

Peyre de Fabrègues C
Centre for Vertebrate Evolutionary Biology, Institute of Palaeontology, Yunnan University, Kunming, 650091, China. claire.pdf@gmail.com.
Bi S
Centre for Vertebrate Evolutionary Biology, Institute of Palaeontology, Yunnan University, Kunming, 650091, China. Department of Biology, Indiana University of Pennsylvania, Indiana, PA, 15705, USA.
Li H
Centre for Vertebrate Evolutionary Biology, Institute of Palaeontology, Yunnan University, Kunming, 650091, China.
Li G
Centre for Vertebrate Evolutionary Biology, Institute of Palaeontology, Yunnan University, Kunming, 650091, China.
Yang L
Yimen Administration of Cultural Heritage, Yimen, 651100, China.
Xu X
Key Laboratory of Evolutionary Systematics of Vertebrates, Institute of Vertebrate Paleontology and Paleoanthropology, Chinese Academy of Sciences, Beijing, 100044, China. xu.xing@ivpp.ac.cn. Center for Excellence in Life and Paleoenvironment, Beijing, 100044, China. xu.xing@ivpp.ac.cn.

MeSH

AnimalsBiological EvolutionChinaDinosaursExtinction, BiologicalFossilsHistory, AncientPhylogenySpecies SpecificityTime Factors

Pub Type(s)

Historical Article
Journal Article
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

32620800

Citation

Peyre de Fabrègues, Claire, et al. "A New Species of Early-diverging Sauropodiformes From the Lower Jurassic Fengjiahe Formation of Yunnan Province, China." Scientific Reports, vol. 10, no. 1, 2020, p. 10961.
Peyre de Fabrègues C, Bi S, Li H, et al. A new species of early-diverging Sauropodiformes from the Lower Jurassic Fengjiahe Formation of Yunnan Province, China. Sci Rep. 2020;10(1):10961.
Peyre de Fabrègues, C., Bi, S., Li, H., Li, G., Yang, L., & Xu, X. (2020). A new species of early-diverging Sauropodiformes from the Lower Jurassic Fengjiahe Formation of Yunnan Province, China. Scientific Reports, 10(1), 10961. https://doi.org/10.1038/s41598-020-67754-4
Peyre de Fabrègues C, et al. A New Species of Early-diverging Sauropodiformes From the Lower Jurassic Fengjiahe Formation of Yunnan Province, China. Sci Rep. 2020 07 3;10(1):10961. PubMed PMID: 32620800.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - A new species of early-diverging Sauropodiformes from the Lower Jurassic Fengjiahe Formation of Yunnan Province, China. AU - Peyre de Fabrègues,Claire, AU - Bi,Shundong, AU - Li,Hongqing, AU - Li,Gang, AU - Yang,Lei, AU - Xu,Xing, Y1 - 2020/07/03/ PY - 2019/12/10/received PY - 2020/05/26/accepted PY - 2020/7/5/entrez PY - 2020/7/6/pubmed PY - 2020/12/15/medline SP - 10961 EP - 10961 JF - Scientific reports JO - Sci Rep VL - 10 IS - 1 N2 - Sauropodomorpha were herbivorous saurischian dinosaurs that incorporate Sauropoda and early-diverging sauropodomorphs. The oldest sauropodomorph remains are known from Late Triassic deposits, most of them Gondwanan. The Laurasian record comprises some Triassic forms, but the bulk is Jurassic in age. Among the 14 Jurassic non-sauropodan sauropodomorphs from Laurasia described in the past, 8 are from China. Here we describe a new non-sauropodan sauropodomorph, Irisosaurus yimenensis gen. et sp. nov., from the Early Jurassic Fengjiahe Formation of China. Nearly all of the non-sauropodan sauropodomorph genera currently known from China were first reported from the Lufeng Formation. The Fengjiahe Formation is its Southern equivalent, bringing a fauna similar to that of the Lufeng Formation to light. The new genus is defined based on an incomplete but unique maxilla, with a premaxillary ramus higher than long prior to the nasal process, a large and deep neurovascular foramen within the perinarial fossa, and a deep perinarial fossa defined by a sharp rim. Phylogenetic analysis places Irisosaurus at the very base of Sauropodiformes, as the sister-taxon of the Argentinean genus Mussaurus. This specimen adds to a growing assemblage of Chinese Jurassic non-sauropodan sauropodomorphs that offers new insight into the Laurasian evolution of this clade. SN - 2045-2322 UR - https://www.unboundmedicine.com/medline/citation/32620800/A_new_species_of_early_diverging_Sauropodiformes_from_the_Lower_Jurassic_Fengjiahe_Formation_of_Yunnan_Province_China_ DB - PRIME DP - Unbound Medicine ER -