Anhuilong

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Anhuilong
Temporal range: Middle Jurassic, 174–162  Ma
Anhuilong.png
Skeletal diagram
Scientific classification OOjs UI icon edit-ltr.svg
Domain: Eukaryota
Kingdom: Animalia
Phylum: Chordata
Clade: Dinosauria
Clade: Saurischia
Clade:† Sauropodomorpha
Clade:† Sauropoda
Family:† Mamenchisauridae
Genus:† Anhuilong
Ren et al., 2020
Type species
†Anhuilong diboensis
Ren et al, 2020

Anhuilong (meaning "Anhui dragon") is a genus of mamenchisaurid dinosaur known from the Hongqin Formation of Anhui province, China. The genus contains a single species, Anhuilong diboensis. [1]

Contents

Discovery and naming

Holotype on display at Anhui Geological Museum in Hefei Anhuilong diboensis Ulna.jpg
Holotype on display at Anhui Geological Museum in Hefei

Anhuilong is known from the holotype AGB 5822, a forelimb consisting of a left humerus, ulna, and radius. It is distinguished by the following combination of features: low ratios of the average of the greatest widths of the proximal end, mid-shaft and distal end of the humerus/length of the humerus, total length of ulna to humerus and total length of radius to humerus; the lateral edge of the deltopectoral crest directs caudolaterally, the lateral accessory condyle on the craniodistal edge of humerus is more robust than the medial one, and the cross-sectional shape of the ulna at mid-shaft is elliptical with highest ratio of transverse to craniocaudal diameter among mamenchisaurids. [1]

Phylogeny

Speculative life restoration Anhuilong LM.png
Speculative life restoration

Ren et al. (2020) [nb 1] recovered Anhuilong as the sister taxon of Huangshanlong , with the closest relative of this clade being Omeisaurus tianfuensis . The results of their phylogenetic analysis are shown in the cladogram below: [1]

Eusauropoda

References

  1. 1 2 3 Ren, Xin-Xin; Huang, Jian-Dong; You, Hai-Lu (2020-05-27). "The second mamenchisaurid dinosaur from the Middle Jurassic of Eastern China". Historical Biology. 32 (5): 602–610. Bibcode:2020HBio...32..602R. doi:10.1080/08912963.2018.1515935. ISSN   0891-2963.

Notes

  1. ↑ Although the name first appeared online in 2018, it was only validly published in 2020.
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