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Mesosauridae ✝

Photos

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Source Data

Source	ID	Link
Global Biodiversity Information Facility ID (GBIF)	Not linked to a GBIF record.
PaleoBioDB ID (PBDB)	37578	https://paleobiodb.org/classic/checkTaxonInfo?taxon_no=37578

Rank

family (PBDB)

Taxonomy (PBDB)

Life : Animalia : Chordata : Osteichthyes : Cotylosauria : Mesosauridae

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
family	Mesosauridae	Baur 1889

Opinions (PBDB)

Name	Rank	Opinion	Evidence	Author
Mesosauridae	family	belongs to Proganosauria	stated with evidence	Baur, 1889
Mesosauridae	family	belongs to Pelycosauria	stated with evidence	Huene, 1941
Mesosauridae	family	belongs to Proganosauria	stated with evidence	Kuhn, 1946
Mesosauridae	family	belongs to Mesosauria	stated without evidence	Haughton and Brink, 1954
Mesosauridae	family	belongs to Mesosauria	implied	Carroll, 1988
Mesosauridae	family	belongs to Parareptilia	stated with evidence	Gauthier et al., 1988
Mesosauridae	family	belongs to Sauropsida	stated with evidence	Laurin and Reisz, 1995
Mesosauridae	family	belongs to Amniota	implied	Rossmann, 2000
Mesosauridae	family	belongs to Proganosauria	implied	Sedor and Ferigolo, 2001
Mesosauridae	family	belongs to Mesosauria	implied	Karl et al., 2007

Status (PBDB)

extinct

Taxon Size (PBDB)

First Recorded Appearance

290 - 279 Ma
Permian

Last Recorded Appearance

290 - 279 Ma
Permian

Environment

coastal,marine,brackish (based on Mesosauridae)

Motility

actively mobile (based on Mesosauridae)

Diet

piscivore (based on Mesosauridae)

Reproduction

dispersal=direct/internal (based on Mesosauridae)

Ontogeny

addition of parts,modification of parts (based on Mesosauridae)

Taphonomy

phosphatic (based on Vertebrata)

Primary Reference (PBDB)

G. Baur. 1889. Palaeohatteria Credner, and the Proganosauria. American Journal of Science 27(220):310-313

Fossil Distribution

Subtaxa

Name	Status	Fossil Occurrences	Oldest	Youngest
Brazilosaurus ✝ genus	accepted (GBIF) listed (PBDB)	6	290 Ma Permian	290 Ma Permian
Mesosaurus ✝ genus	accepted (GBIF) listed (PBDB)	30	290 Ma Permian	290 Ma Permian
Stereosternum ✝ genus	listed (PBDB)	13	290 Ma Permian	290 Ma Permian

Synonymy List

Year	Name and Author
1889	Mesosauridae Baur p. 311
1889	Mesosauridae Gürich p. 652
1890	Mesosauridae Zittel p. 598
1892	Mesosaurus pleurogaster Seeley p. 857 figs. 1-4 Pl. XVIII
1905	Mesosaurus pleurogaster Broom p. 103
1908	Mesosaurus pleurogaster Broom p. 380
1913	Noteosaurus Broom p. 358
1913	Noteosaurus africanus Broom p. 359 figs. p. 358
1914	Mesosaurus pleurogaster Stromer p. 532

Year	Name and Author
1941	Mesosauridae Huene p. 56
1946	Mesosauridae Kuhn p. 58
1954	Mesosauridae Haughton and Brink p. 3
1988	Mesosauridae Carroll
1988	Mesosauridae Gauthier et al. p. 139 fig. 4.4
1995	Mesosauridae Laurin and Reisz pp. 171, 172 fig. 2
2000	Mesosauridae Rossmann p. 15
2001	Mesosauridae Sedor and Ferigolo p. 151
2007	Mesosauridae Karl et al. p. 67

References

Baur G. Palaeohatteria Credner, and the Proganosauria, American Journal of Science 27 220, 310-313

Gürich G. Ditrochosaurus capensis - ein neuer Mesosaurier aus der Karooformation Süd-Afrikas, Zeitschrift der Deutschen Geologischen Gesellschaft 41 4, 641-652

Zittel K. A. v. , Handbuch der Palaeontologie. I. Abteilung Paleozoologie. III. Band. Vertebrata (Pisces, Amphibia, Reptilia, Aves) [Handbook of Paleontology. Division I. Paleozoology. Volume III. Vertebrata (Pisces, Amphibia, Reptilia, Aves)], xii-900

Seeley H. G. The Mesosauria of South Africa, Quarterly Journal of the Geological Society of London 48, 586-604

Broom R. (1905) Notes on the Structure of Mesosaurus, Transactions of the South African Philosophical Society 15, 103-112

Broom R. (1908) Note on the Species of Mesosaurus, Annals of the South African Museum 4 8, 379-380

Stromer E. (1914) Die ersten fossilen Reptilreste aus Deutsch-Südwestafrika und ihre geologische Bedeutung, Centralblatt für Mineralogie, Geologie und Paläontologie 1914, 530-541

Huene F. v. (1941) Osteologie und Systematische Stellung von Mesosaurus, Palaeontographica Abteilung A 92, 45-58

Kuhn O. (1946) Das System der fossilen und rezenten Amphibien und Reptilien [The system of fossil and recent amphibians and reptiles], Bericht der Naturforschenden Gesellschaft in Bamberg 29, 49-67

Haughton S. H., Brink A. S. (1954) A bibliographical list of Reptilia from the Karroo Beds of South Africa, Palaeontologia Africana 2, 1-187

Carroll R. L. (1988) , Vertebrate Paleontology and Evolution, 1-698

Gauthier J. A., Kluge A. G., et al (1988) The early evolution of the Amniota, In M. J. Benton (ed.), The Phylogeny and Classification of the Tetrapods, Volume 1: Amphibians, Reptiles, Birds. Systematics Association Special Volume, Clarendon Press 35A, 103-155

Laurin M., Reisz R. R. (1995) A reevaluation of early amniote phylogeny, Zoological Journal of the Linnean Society 113 2, 165-223

Rossmann T. (2000) Studien an Mesosauriern (Amniota inc sed: Mesosauridae): 2 Neue Erkenntnisse zur Anatomie, mit Berücksichtigung der Taxonomie von Mesosaurus pleurogaster (Seeley), Senckenbergiana lethaea 80 1, 13-28

Sedor F. A., Ferigolo J. (2001) A coluna vertebral de Brazilosaurus sanpauloensis Shikama e Ozaki, 1966 da Formação Irati, Permiano da Bacia do Paraná (Brasil) (Proganosauria, Mesosauridae), Acta Biológica Paranaense, Curitiba 30 1-4, 151-173

Karl H.-V., Gröning E., et al (2007) The Mesosauria in the collections of Göttingen and Clausthal: implications for a modified classification, Clausthaler Geowissenschaften 6, 63-78

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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