Callibrachion

Callibrachion; Temporal range: Early Permian, 299–296.4 Ma PreЄ Є O S D C P T J K Pg N ↓
	Fossil
Scientific classification
Kingdom:	Animalia
Phylum:	Chordata
Clade:	†Caseasauria
Family:	†Caseidae
Genus:	†Callibrachion; Boule and Glangeaud, 1893
Species
	†C. gaudryi Boule and Glangeaud, 1893 (type);

Callibrachion is an extinct genus of caseasaur. It was at least 1.5 metres (5 ft) in length. It lived during the Early Permian.

Discovery and history

Restoration

Skeleton

It was originally described in 1893 on a basis of a specimen Early Permian deposits in northeastern France.^[1] It was later considered a synonym of Haptodus by several authors, but subsequent examination has found it be a caseid rather a sphenacodont.^[2] This was confirmed by cladistic analysis, which recovered Callibrachion as a basal caseid ^[3]

References

↑ Boule M., Glangeaud P. (1893). "Le Callibrachion, nouveau reptile du Permien d'Autun". Comptes Rendus Hebdomadaires des Séances de l'Académie des Sciences. 117 (19): 646–648.
↑ Frederik Spindler, Jocelyn Falconnet, and Jörg Fröbisch (2015). "Callibrachion and Datheosaurus, two historical and previously mistaken basal caseasaurian synapsids from Europe". Acta Palaeontologica Polonica. 61. doi:10.4202/app.00221.2015.
↑ Neil Brocklehurst, Robert Reisz, Vincent Fernandez, and Jörg Fröbisch (2016). "A Re-Description of 'Mycterosaurus' smithae, an Early Permian Eothyridid, and Its Impact on the Phylogeny of Pelycosaurian-Grade Synapsids". PLoS ONE. 11 (6): e0156810. doi:10.1371/journal.pone.0156810. PMC 4917111. PMID 27333277.

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[1] Boule M., Glangeaud P. (1893). "Le Callibrachion, nouveau reptile du Permien d'Autun". Comptes Rendus Hebdomadaires des Séances de l'Académie des Sciences. 117 (19): 646–648.

[2] Frederik Spindler, Jocelyn Falconnet, and Jörg Fröbisch (2015). "Callibrachion and Datheosaurus, two historical and previously mistaken basal caseasaurian synapsids from Europe". Acta Palaeontologica Polonica. 61. doi:10.4202/app.00221.2015.

[3] Neil Brocklehurst, Robert Reisz, Vincent Fernandez, and Jörg Fröbisch (2016). "A Re-Description of 'Mycterosaurus' smithae, an Early Permian Eothyridid, and Its Impact on the Phylogeny of Pelycosaurian-Grade Synapsids". PLoS ONE. 11 (6): e0156810. doi:10.1371/journal.pone.0156810. PMC 4917111. PMID 27333277.