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Trinacromerum kirki

Reptilia - Plesiosauria - Polycotylidae

Taxonomy
Trinacromerum kirki was named by Russell (1935). It is a 3D body fossil. Its type locality is Northwest of Treherne, which is in a Turonian marine horizon in the Favel Formation of Canada.

It was recombined as Dolichorhynchops kirki by Russell (1932) and Welles (1962).

Synonymy list
YearName and author
1932Dolichorhynchops kirki Russell
1935Trinacromerum kirki Russell
1962Dolichorhynchops kirki Welles p. 59
1996Trinacromerum kirki Carpenter p. 285
1997Trinacromerum kirki Adams p. 182

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RankNameAuthor
kingdomAnimalia()
—Bilateria
—EubilateriaAx 1987
—Deuterostomia
phylumChordataHaeckel 1874
subphylumVertebrata
superclassGnathostomata
—Osteichthyes()
subclassSarcopterygii()
subclassDipnotetrapodomorpha(Nelson 2006)
subclassTetrapodomorpha()
—Tetrapoda
—Reptiliomorpha
—Anthracosauria
subclassAmphibiosauriaKuhn 1967
RankNameAuthor
—Cotylosauria()
—Amniota
—Sauropsida
classReptilia
subclassEureptilia()
—Romeriida
—Diapsida()
suborderSauropterygia
orderPlesiosauriade Blainville 1835
superfamilyPlesiosauroideaWelles 1943
familyPolycotylidaeWilliston 1908
subfamilyPolycotylinae
genusTrinacromerumCragin 1888
specieskirki

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.

†Trinacromerum kirki Russell 1935
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Diagnosis
ReferenceDiagnosis
L. S. Russell 1935"About the size of T. bentonianum Cragin. Ilium flattened-ovoid in cross section, not rounded; pubis and ischium flat, not concave, and with oblique sutural truncation; ischium markedly elongate posteriorly."
K. Carpenter 1996Differs from Trinacromerum bentonianum in a posterior extension of the coracoid; elongated ischium and posteriorly curverd ilium.
Measurements
No measurements are available
Composition: hydroxyapatiteo
Environment: marineo
Locomotion: actively mobileo
Life habit: aquatico
Depth habitat: surfaceo
Diet: carnivoreo
Reproduction: viviparouso
Created: 2009-07-20 06:05:48
Modified: 2011-08-12 01:58:15
Source: o = order
Reference: Kiessling 2004

Age range: base of the Early/Lower Turonian to the top of the Campanian or 93.50000 to 72.10000 Ma

Collections (3 total)


Time interval Ma Country or state Original ID and collection number
Early/Lower Turonian93.5 - 89.3Canada (Manitoba) Trinacromerum kirki (type locality: 102074)
Campanian83.6 - 72.1Canada (Manitoba) Dolichorhynchops kirki (36746 36754)