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Stereosternum tumidum

Mesosauridae

Taxonomy
Stereosternum tumidum was named by Cope (1885). Its type specimen is BMNH R3520, a partial skeleton (anterior third of the body missing), and it is a compression fossil.

It was recombined as Mesosaurus tumidus by Lydekker (1889), Karl et al. (2007).

Synonymy list
YearName and author
1885Stereosternum tumidum Cope p. 7 figs. 1-8
1886Stereosternum tumidum Cope p. 7
1889Mesosaurus tumidus Lydekker p. 302
1892Stereosternum tumidum Seeley p. 598 fig. 4
1987Stereosternum tumidum Oelofsen and Araujo p. 370
1999Stereosternum tumidum Rossmann and Maisch p. 73 figs. 3, 4
2000Stereosternum tumidum Rossmann p. 17 figs. 2-5
2002Stereosternum tumidum Rossmann p. 205 fig. 6
2007Mesosaurus tumidus Karl et al. p. 70

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RankNameAuthor
kingdomAnimalia()
—Bilateria
—EubilateriaAx 1987
—Deuterostomia
phylumChordataHaeckel 1874
subphylumVertebrata
superclassGnathostomata
—Osteichthyes()
subclassSarcopterygii()
subclassDipnotetrapodomorpha(Nelson 2006)
subclassTetrapodomorpha()
RankNameAuthor
—Tetrapoda
—Reptiliomorpha
—Anthracosauria
subclassAmphibiosauriaKuhn 1967
—Cotylosauria()
—Amniota
—Sauropsida
familyMesosauridae
genusStereosternum
speciestumidum

If no rank is listed, the taxon is considered an unranked clade in modern classifications. Ranks may be repeated or presented in the wrong order because authors working on different parts of the classification may disagree about how to rank taxa.

†Stereosternum tumidum Cope 1885
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Diagnosis
No diagnoses are available
Measurements
No measurements are available
Composition: phosphaticsubp
Ontogeny: addition of parts, modification of partsf
Environment: coastal, marine, brackishf
Locomotion: actively mobilef
Life habit: amphibiousf
Diet: piscivoref
Dispersal: direct/internalf
Created: 2009-07-20 08:24:16
Modified: 2009-08-20 11:46:24
Source: f = family, subp = subphylum
References: Carroll 1988, Rossmann 2002

Age range: Artinskian or 290.10000 to 283.30000 Ma

Collections (13 total)


Time interval Ma Country or state Original ID and collection number
Artinskian290.1 - 283.3South Africa (Northern Cape) Mesosaurus tenuidens (90303)
Artinskian290.1 - 283.3Paraguay (Guairá) Mesosaurus tumidus (90832)
Artinskian290.1 - 283.3Brazil (São Paulo) Stereosternum tumidum (90192 90193 90215 90217 90226 90429)
Artinskian290.1 - 283.3Brazil (Rio Grande do Sul) Stereosternum tumidum (90191)
Artinskian290.1 - 283.3Brazil (Goiás) Stereosternum tumidum (89833 89839)
Artinskian290.1 - 283.3Brazil (Paraná) Stereosternum tumidum (90227)
Artinskian290.1 - 283.3Brazil (Ceará) Stereosternum tumidum (90216)