Analong

Analong (meaning "Ana dragon") is a genus of mamenchisaurid sauropod dinosaur from the Chuanjie Formation in Yunnan, China. The type and only species is Analong chuanjieensis.[1]

Analong
Temporal range: Middle Jurassic, 170–168 Ma
Scientific classification
Kingdom: Animalia
Phylum: Chordata
Clade: Dinosauria
Clade: Saurischia
Suborder: Sauropodomorpha
Clade: Sauropoda
Clade: Eusauropoda
Family: Mamenchisauridae
Genus: Analong
Ren et al. 2020
Type species
Analong chuanjieensis
Ren et al. 2020

Discovery and naming

The holotype, LFGT LCD 9701–1, found in 1995, was in 2011 assigned to the contemporary genus Chuanjiesaurus.[2] However, in 2020, Ren et al. noted several differences between it and the holotype of Chuanjiesaurus, and so assigned it to a new taxon, Analong chuanjieensis. The binomial name means "Ana dragon from Chuanjie", where Ana is the village in Yunnan Province where the holotype was found.[1]

Classification

In a phylogenetic analysis, Analong was found by its describers to be the earliest diverging mamenchisaurid. Their resulting phylogenetic tree of Mamenchisauridae is reproduced below.[1]

Mamenchisauridae

Analong chuanjieensis

Omeisaurus tianfuensis

Yuanmousaurus jiangyiensis

Mamenchisaurus youngi

Chuanjiesaurus anaensis

References

  1. Xin-Xin Ren; Toru Sekiya; Tao Wang; Zhi-Wen Yang; Hai-Lu You (2020). "A revision of the referred specimen of Chuanjiesaurus anaensis Fang et al., 2000: a new early branching mamenchisaurid sauropod from the Middle Jurassic of China". Historical Biology: An International Journal of Paleobiology. in press. doi:10.1080/08912963.2020.1747450.
  2. Sekiya, T. (2011). "Re-examination of Chuanjiesaurus anaensis (Dinosauria: Sauropoda) from the Middle Jurassic Chuanjie Formation, Lufeng County, Yunnan Province, southwest China" (PDF). Memoir of the Fukui Prefectural Dinosaur Museum. 10: 1–54.


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