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Monotypic taxon: Genus †Alxasaurus Russell & Dong, 1993 (dinosaur)

Entity:

Concise hierarchy

(Kingdom) Animalia - (Phylum) Chordata - (Class) Reptilia - (Clade) Therizinosauria - (Family) Alxasauridae

Included, by definition, in branch-based clade

†Therizinosauria (Clade) Russell 1997 [Russell 1997]

Ref: C. Hendrickx et al., 2015: table (p. 71) (Russell, 1997).

Original position

†Alxasauridae (Family) Russell & Dong, 1993

Ref: D.A. Russell & Z.-M. Dong, 1993: 2108.

Current position

†Alxasauridae (Family) Russell & Dong, 1993

Ref: D.A. Russell & Z.-M. Dong, 1993: 2108. [new taxon]

Alternative positions

†*Therizinosauridae* (Clade) Maleev 1954 [Sereno 1998]	Ref: C. Hendrickx et al., 2015: 13 (fig. 5).
†*Therizinosauridae* (Family) Maleev, 1954	Ref: C. Hendrickx et al., 2015: 13 (fig. 5). [implicit]
†*Therizinosauroidea* (Clade) Russell & Dong 1993 [Zhang et al. 2001]	Ref: L.E. Zanno, 2010: 527 (fig. 7).

Historical positions

†*Therizinosauridae* (Clade) Maleev 1954 [Sereno 1998]	Ref: C. Hendrickx et al., 2015: 13 (fig. 5).
†*Therizinosauroidea* (Clade) Russell & Dong 1993 [Zhang et al. 2001]	Ref: J.M. Clark et al., 2004: table 7.1 (p. [152]).

Number of Subtaxa

2026	Available in Systema Naturae 2000	†1s
1989-present	Systema Naturae 2000	[; †1s]
2004	J.M. Clark et al.	[; †1s]

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Last updated: 28 Aug 2026