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Therizinosauroidea ✝

Photos

Photo Gallery

Source Data

Source	ID	Link
Global Biodiversity Information Facility ID (GBIF)	Not linked to a GBIF record.
PaleoBioDB ID (PBDB)	64125	https://paleobiodb.org/classic/checkTaxonInfo?taxon_no=64125

Rank

superfamily (PBDB)

Taxonomy (PBDB)

Life : Animalia : Chordata : Saurischia : Avetheropoda : Therizinosauroidea

Classification
(PBDB,GBIF)

Rank	Name	Author
-	Eukaryota
-	Opisthokonta	Cavalier-Smith 1987
kingdom	Animalia
-	Triploblastica	Lankester 1877
-	Nephrozoa	Jondelius et al. 2002
-	Deuterostomia	Grobben 1908
phylum	Chordata	Haeckel 1847
subphylum	Vertebrata	Lamarck 1801
superclass	Gnathostomata	Gegenbauer 1874
-	Osteichthyes
-	Sarcopterygii	Romer 1955
subclass	Dipnotetrapodomorpha
subclass	Tetrapodomorpha
-	Tetrapoda
-	Reptiliomorpha	Säve-Söderbergh 1934
-	Anthracosauria	Säve-Söderbergh 1934
-	Batrachosauria
-	Cotylosauria
-	Amniota	Haeckel 1866
-	Sauropsida	Huxley 1864
class	Reptilia	Laurenti 1768
subclass	Eureptilia
-	Romeriida	Gauthier et al. 1988
-	Diapsida
-	Eosuchia
-	Neodiapsida	Benton 1985
-	Sauria	Gauthier 1984
-	Archosauromorpha
-	Crocopoda	Ezcurra 2016
-	Archosauriformes	Gauthier 1986
-	Eucrocopoda	Ezcurra 2016
-	Archosauria
informal	Avemetatarsalia	Benton 1999
-	Ornithodira	Gauthier 1986
-	Dinosauromorpha	Benton 1985
-	Dinosauriformes	Novas 1992
-	Dinosauria
-	Saurischia
-	Theropoda
-	Neotheropoda	Bakker 1986
-	Averostra	Paul 2002
-	Tetanurae	Gauthier 1986
order	Avetheropoda	Paul 1988
suborder	Coelurosauria	Huene 1914
-	Maniraptoriformes	Holtz and Padian 1995
-	Therizinosauria	Russell 1997
superfamily	Therizinosauroidea	Russell and Dong 1994

Opinions (PBDB)

Name	Rank	Opinion	Evidence	Author
Therizinosauroidea	superfamily	belongs to Oviraptorosauria	stated with evidence	Russell and Dong, 1994
Therizinosauroidea	superfamily	belongs to Coelurosauria	stated without evidence	Clark et al., 1995
Therizinosauroidea	superfamily	belongs to Maniraptoriformes	stated without evidence	Holtz, 1995
Therizinosauroidea	superfamily	belongs to Maniraptora	stated without evidence	Holtz, 1996
Therizinosauroidea	superfamily	belongs to Coelurosauria	stated without evidence	Xu et al., 1999
Therizinosauroidea	superfamily	belongs to Maniraptora	stated with evidence	Holtz, 2000
Therizinosauroidea	superfamily	belongs to Coelurosauria	stated without evidence	Zhang et al., 2001
Therizinosauroidea	superfamily	belongs to Maniraptora	stated without evidence	Rauhut, 2003
Therizinosauroidea	superfamily	belongs to Coelurosauria	stated with evidence	Clark et al., 2004
Therizinosauroidea	superfamily	belongs to Maniraptora	stated without evidence	Zanno, 2004
Therizinosauroidea	superfamily	belongs to Therizinosauria	stated without evidence	Zanno et al., 2009
Therizinosauroidea	superfamily	belongs to Therizinosauria	stated with evidence	Pu et al., 2013

Status (PBDB)

extinct

Taxon Size (PBDB)

First Recorded Appearance

201 - 199 Ma
Early Jurassic

Last Recorded Appearance

72.1 - 66.0 Ma
Late/Upper Cretaceous

Environment

terrestrial (based on Therizinosauroidea)

Motility

actively mobile (based on Theropoda)

Diet

herbivore (based on Therizinosauroidea)

Reproduction

oviparous (based on Therizinosauroidea)

Ontogeny

accretion,modification of parts (based on Theropoda)

Taphonomy

hydroxylapatite,compact or dense (based on Theropoda)

Primary Reference (PBDB)

D. A. Russell and Z.-M. Dong. 1994. The affinities of a new theropod from the Alxa Desert, Inner Mongolia, People's Republic of China. Canadian Journal of Earth Sciences 30(10-11):2107-2127

Subtaxa

Name	Status	Fossil Occurrences	Oldest	Youngest
Alxasauridae ✝ family	accepted (GBIF) listed (PBDB)
Dendroolithidae ✝ family	listed (PBDB)	11	86.3 Ma Late/Upper Cretaceous	72.1 Ma Late/Upper Cretaceous
Therizinosauridae ✝ family	listed (PBDB)	20	201 Ma Early Jurassic	72.1 Ma Late/Upper Cretaceous
Alxasaurus ✝ genus	accepted (GBIF) listed (PBDB)	1	125 Ma Early/Lower Cretaceous	125 Ma Early/Lower Cretaceous
Beipiaosaurus ✝ genus	accepted (GBIF) listed (PBDB)	2	130 Ma Early/Lower Cretaceous	130 Ma Early/Lower Cretaceous
Martharaptor ✝ genus	accepted (GBIF) listed (PBDB)	1	125 Ma Early/Lower Cretaceous	125 Ma Early/Lower Cretaceous

Synonymy List

Year	Name and Author
1980	Segnosauria Barsbold and Perle pp. 187-188
1983	Segnosauria Barsbold p. 104
1989	Segnosauria Sereno p. 38A
1990	Segnosauria Benton p. 19
1992	Segnosaurischia Dong p. 167
1994	Therizinosauroidea Russell and Dong p. 2108
1995	Therizinosauroidea Clark et al. p. 24A
1995	Therizinosauroidea Holtz, Jr. p. 35A
1995	Segnosauria Nessov pp. 35-36
1996	Therizinosauroidea Holtz, Jr. p. 42A

Year	Name and Author
1997	Segnosaurischia Dong and Yu p. 90
1998	Therizinosauroidea Holtz, Jr. p. 40
1999	Therizinosauroidea Xu et al. p. 351
2000	Therizinosauroidea Holtz, Jr. p. 13 fig. 5
2001	Therizinosauroidea Zhang et al. p. 284
2003	Therizinosauroidea Rauhut p. 156
2004	Therizinosauroidea Clark et al. p. 152
2004	Therizinosauroidea Zanno p. 134A
2009	Therizinosauroidea Zanno et al.
2013	Therizinosauroidea Pu et al.

References

Russell D. A., Dong Z.-M. (1994) The affinities of a new theropod from the Alxa Desert, Inner Mongolia, People's Republic of China, Canadian Journal of Earth Sciences 30 10-11, 2107-2127

Barsbold R., Perle A. (1980) Segnosauria, a new infraorder of carnivorous dinosaurs, Acta Palaeontologica Polonica 25 2, 187-195

Barsbold R. (1983) Khishchnye dinosavry mela Mongoliy [Carnivorous dinosaurs from the Cretaceous of Mongolia], Transactions of the Joint Soviet-Mongolian Paleontological Expedition 19, 1-117

Benton M. J. (1990) Origin and interrelationships of dinosaurs, The Dinosauria, D. B. Weishampel, P. Dodson, & H. Osmólska (editors), University of California Press, Berkeley, 11-30

Nessov L. A. (1995) Dinozavri severnoi Yevrazii: Novye dannye o sostave kompleksov, ekologii i paleobiogeografii [Dinosaurs of northern Eurasia: new data about assemblages, ecology, and paleobiogeography], Institute for Scientific Research on the Earth's Crust, St. Petersburg State University, St. Petersburg, 1-156

Dong Z., Yu H. (1997) A new segnosaur from Mazongshan area, Gansu Province, China, Sino-Japanese Silk Road Dinosaur Expedition. China Ocean Press, Beijing, 90-95

Xu X., Tang Z.-L., et al (1999) A therizinosauroid dinosaur with integumentary structures from China, Nature 399, 350-354

Zhang X.-H., Xu X., et al (2001) A long-necked therizinosauroid dinosaur from the Upper Cretaceous Iren Dabasu Formation of Nei Mongol, People's Republic of China, Vertebrata PalAsiatica 39 4, 282-290

Rauhut O. W. M. (2003) The interrelationships and evolution of basal theropod dinosaurs, Special Papers in Palaeontology 69, 1-213

Clark J. M., Maryanska T., et al (2004) Therizinosauroidea, The Dinosauria (second edition). University of California Press, Berkeley, 151-164

Zanno L. E., Gillette D. D., et al (2009) A new North American therizinosaurid and the role of herbivory in 'predatory' dinosaur evolution, Proceedings of the Royal Society B: Biological Sciences doi:10.1098/rspb.2009.1029

Pu H., Kobayashi Y., et al (2013) An unusual basal therizinosaur with an ornithischian dental arrangement from northeastern China, PLoS ONE 8 5, e63423

Data courtesy of: PBDB: The Paleobiology Database, Creative Commons CC-BY licenced. , GBIF: the Global Biodiversity Information Facility, various licences, iDigBio, various licences, and EOL: The Encyclopedia of Life (Open Data Public Domain). Because fossils are made of minerals too!

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