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Rocasaurus ✝

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Description

Rocasaurus (meaning "Roca lizard") is a genus of titanosaurian sauropod that lived in South America. Rocasaurus was discovered in Argentina in 2000, within the Allen Formation which is dated to be middle Campanian to early Maastrichtian in age (75 to 70 million years ago in the Late Cretaceous). This genus grew up to 8 metres (26 ft) long, making it one of the smaller sauropods. It seems to be closely related to saltasaurid dinosaurs, like Saltasaurus and Neuquensaurus.

From Wikipedia article at https://en.wikipedia.org/wiki/Rocasaurus, which is released under the Creative Commons Attribution-Share-Alike License 3.0.

Source Data

Source	ID	Link
Global Biodiversity Information Facility ID (GBIF)	4822755	https://www.gbif.org/species/4822755
PaleoBioDB ID (PBDB)	66612	https://paleobiodb.org/classic/checkTaxonInfo?taxon_no=66612

Rank

genus

Taxonomy (GBIF)

Life : Animalia : Chordata : Reptilia : Dinosauria : Saltasauridae : Rocasaurus

Taxonomy (PBDB)

Life : Animalia : Chordata : Saurischia : Saltasauridae : Rocasaurus

Taxonomic Status (GBIF)

accepted

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
-	Eusaurischia	Padian et al. 1999
-	Sauropodomorpha
-	Massopoda	Yates 2007
-	Sauropodiformes	Martinez et al. 2011
-	Sauropoda
-	Eusauropoda	Upchurch 1995
-	Neosauropoda	Bonaparte 1986
-	Macronaria	Sereno 1997
-	Titanosauriformes	Salgado et al. 1997
-	Somphospondyli	Wilson and Sereno 1998
-	Titanosauria	Bonaparte and Coria 1993
-	Eutitanosauria	Sanz et al. 1999
-	Lithostrotia	Upchurch et al. 2004
family	Saltasauridae	Sereno 1998
subfamily	Saltasaurinae	Powell 1992
genus	Rocasaurus	Salgado & Azpilicueta 2000

Scientific Name

Rocasaurus Salgado & Azpilicueta, 2000

Name Published In

Ameghiniana 37 (3)

Opinions (PBDB)

Name	Rank	Opinion	Evidence	Author
Rocasaurus	genus	belongs to Saltasaurinae	stated without evidence	Salgado and Azpilicueta, 2000
Rocasaurus	genus	belongs to Saltasaurinae	stated with evidence	Wilson, 2002
Rocasaurus	genus	belongs to Lithostrotia	stated with evidence	Upchurch et al., 2004
Rocasaurus	genus	belongs to Saltasaurinae	stated without evidence	Curry Rogers, 2005
Rocasaurus	genus	belongs to Saltasaurinae	stated with evidence	González Riga et al., 2009
Rocasaurus	genus	belongs to Saltasaurinae	stated without evidence	Otero, 2010
Rocasaurus	genus	belongs to Saltasaurinae	stated with evidence	Filippi et al., 2011
Rocasaurus	genus	belongs to Saltasaurinae	stated without evidence	González Riga, 2011
Rocasaurus	genus	belongs to Saltasaurinae	stated with evidence	D'Emic, 2012
Rocasaurus	genus	belongs to Saltasaurinae	stated without evidence	Candeiro and Harris, 2012
Rocasaurus	genus	belongs to Saltasaurinae	stated with evidence	González Riga and Ortiz David, 2014

Status (PBDB)

extinct

Taxon Size (PBDB)

First Recorded Appearance

83.5 - 66.0 Ma
Late/Upper Cretaceous

Last Recorded Appearance

83.5 - 66.0 Ma
Late/Upper Cretaceous

Environment

terrestrial (based on Sauropoda)

Motility

actively mobile (based on Sauropoda)

Diet

herbivore (based on Sauropoda)

Reproduction

oviparous, dispersal=direct/internal,mobile (based on Sauropoda)

Ontogeny

accretion,modification of parts (based on Sauropoda)

Taphonomy

hydroxylapatite,compact or dense,thick (based on Sauropoda)

Primary Reference (PBDB)

L. Salgado and C. Azpilicueta. 2000. Un nuevo saltasaurino (Sauropoda, Titanosauridae) de la provincia de Río Negro (Formación Allen, Cretácico Superior), Patagonia, Argentina [A new saltasaurine (Sauropoda, Titanosauridae) from Río Negro province (Allen Formation, Upper Cretaceous), Patagonia, Argentina. Ameghiniana 37(3):259-264

Wikipedia

https://en.wikipedia.org/wiki/Rocasaurus

Fossil Distribution

Subtaxa

Name	Status	Common Name(s)	Fossil Occurrences	Oldest	Youngest
Rocasaurus muniozi ✝ species	accepted (GBIF) listed (PBDB)		1	83.5 Ma Late/Upper Cretaceous	83.5 Ma Late/Upper Cretaceous

Synonymy List

Year	Name and Author
2000	Rocasaurus Salgado and Azpilicueta pp. 259-260
2002	Rocasaurus Wilson p. 249
2004	Rocasaurus Upchurch et al. p. 270
2005	Rocasaurus Curry Rogers pp. 69-71 figs. 2.11-2.13
2005	Rocasaurus Salgado and Coria p. 441
2007	Rocasaurus Calvo et al. p. 497 fig. 14
2007	Rocasaurus Calvo et al. p. 533 fig. 3
2009	Rocasaurus González Riga et al. p. 144 fig. 11

Year	Name and Author
2010	Rocasaurus Otero p. 419
2011	Rocasaurus Filippi et al.
2011	Rocasaurus González Riga p. 282
2011	Rocasaurus Navarrete et al. p. 9
2012	Rocasaurus Candeiro and Harris p. 74
2012	Rocasaurus D'Emic
2014	Rocasaurus González Riga and Ortiz David

References

Salgado L., Azpilicueta C. (2000) Un nuevo saltasaurino (Sauropoda, Titanosauridae) de la provincia de Río Negro (Formación Allen, Cretácico Superior), Patagonia, Argentina [A new saltasaurine (Sauropoda, Titanosauridae) from Río Negro province (Allen Formation, Upper Cretaceous), Patagonia, Argentina, Ameghiniana 37 3, 259-264

Wilson J. A. (2002) Sauropod dinosaur phylogeny: critique and cladistic analysis, Zoological Journal of the Linnean Society 136, 217-276

Upchurch P., Barrett P. M., et al (2004) Sauropoda, The Dinosauria (2nd edition). University of California Press, Berkeley, 259-322

Calvo J. O., González Riga B. J., et al (2007) A new titanosaur sauropod from the Late Cretaceous of Neuquén, Patagonia, Argentina, Arquivos do Museu Nacional, Rio de Janeiro 65 4, 485-504

Calvo J. O., Porfiri J. D., et al (2007) A new Cretaceous terrestrial ecosystem from Gondwana with the description of a new sauropod dinosaur, Anais da Academia Brasileira de Ciências 79 3, 529-541

González Riga B. J., Previtera E., et al (2009) Malarguesaurus florenciae gen. et sp. nov., a new titanosauriform (Dinosauria, Sauropoda) from the Upper Cretaceous of Mendoza, Argentina, Cretaceous Research 30 1, 135-148 doi:10.1016/j.cretres.2008.06.006

Otero A. (2010) The appendicular skeleton of Neuquensaurus, a Late Cretaceous saltasaurine sauropod from Patagonia, Argentina, Acta Palaeontologica Polonica 55 3, 399-426 doi:10.4202/app.2009.0099

Filippi L. S., García R. A., et al (2011) A new titanosaur sauropod dinosaur from the Upper Cretaceous of North Patagonia, Argentina, Acta Palaeontologica Polonica 56 3, 505-520

González Riga B. J. (2011) Speeds and stance of titanosaur sauropods: analysis of Titanopodus tracks from the Late Cretaceous of Mendoza, Argentina, Anais da Academia Brasileira de Ciencias 83 1, 279-290

Navarrete C., Casal G., et al (2011) Drusilasaura deseadensis gen. et sp. nov., un nuevo titanosaurio (Dinosauria–Sauropoda), de la Formacíon Bajo Barreal, Cretácico Superior del norte de Santa Cruz, Argentina [Drusilasaura deseadensis gen. et sp. nov., a new titanosaur (Dinosauria–Sauropoda), from the Bajo Barreal Formation, Upper Cretaceous of the north of Santa Cruz, Argentina], Revista Brasileira de Paleontologia 14 1, 1-14 doi:10.4072/rbp.2011.1.01

Candeiro C. R. A., Harris J. D. (2012) The tetrapod fauna of the Marília Formation (Bauru Group) at Peirópolis (Minas Gerais, Brazil): correlation with other Late Cretaceous Patagonian faunas, Revue de Paléobiology 31 1, 71-84

D'Emic M. D. (2012) The early evolution of titanosauriform sauropod dinosaurs, Zoological Journal of the Linnean Society 166, 624-671

González Riga B. J., Ortiz David L. (2014) A New Titanosaur (Dinosauria, Sauropoda) from the Upper Cretaceous (Cerro Lisandro Formation) of Mendoza Province, Argentina, Ameghiniana 51 1, 3-25 doi:10.5710/AMGH.26.12.2013.1889

Ameghiniana 37 (3) - via The Interim Register of Marine and Nonmarine Genera

GBIF/Paleo Database - via The Interim Register of Marine and Nonmarine Genera

Nomenclator Zoologicus. A list of the names of genera and subgenera in zoology from the tenth edition of Linnaeus, 1758 to the end of 2004. Digitised by uBio from vols. 1-9 of Neave (ed.), 1939-1996 plus supplementary digital-only volume. http://ubio.org/NomenclatorZoologicus (as at 2006). - via The Interim Register of Marine and Nonmarine Genera

as per family - via The Interim Register of Marine and Nonmarine Genera

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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