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Procolophon trigoniceps

Reptilia - Procolophonidae

Taxonomy
Procolophon trigoniceps was named by Owen (1876). Its type specimen is BMNH R1726, a skull, and it is a 3D body fossil. Its type locality is Donnybrook (Queenstown District), which is in an Induan/Olenekian fluvial mudstone in the Katberg Formation of South Africa. It is the type species of Procolophon.

Synonyms
Synonymy list
YearName and author
1876Procolophon trigoniceps Owen p. 25 figs. 4-7 Pl. 20
1876Procolophon minor Owen p. 26 figs. 8-12 Pl. 20
1878Procolophon griersoni Seeley p. 797 figs. 1-3 pl. XXXII
1878Procolophon cuneiceps Seeley p. 799 figs. 7, 8 pl. XXXII
1878Procolophon laticeps Seeley p. 801 figs. 4-6 pl. XXXII
1889Procolophon trigoniceps Seeley p. 269 figs. 7-9 pl. 9
1903Procolophon trigoniceps Broom p. 9
1905Procolophon baini Broom p. 332
1905Procolophon minor Seeley p. 218 fig. 30
1905Procolophon trigoniceps Seeley p. 220 fig. 31
1905Procolophon cuneiceps Seeley pp. 221, 224 fig. 33
1905Procolophon griersoni Seeley p. 221
1905Procolophon laticeps Seeley pp. 221, 223 fig. 32
1905Procolophon platyrhinus Seeley p. 226 fig. 35
1905Procolophon sphenorhinus Seeley p. 226 fig. 36
1913Procolophon baini Broom p. 362
1913Procolophon minor Broom p. 362
1913Procolophon trigoniceps Broom p. 362
1939Procolophon baini Huene p. 508
1939Procolophon trigoniceps Huene p. 508
1946Procolophon baini Colbert p. 258
1946Procolophon trigoniceps Colbert p. 258
1975Procolophon trigoniceps Colbert and Kitching p. 3 figs. 1-24
1983Procolophon trigoniceps Lavina p. 53
1983Procolophon pricei Lavina p. 54 figs. 1-17
1985Procolophon trigoniceps Carroll and Lindsay figs. 1, 3-14
2002Procolophon brasiliensis Cisneros and Schultz p. 642 figs. 1, 2
2002Procolophon trigoniceps Cisneros and Schultz p. 642
2008Procolophon trigoniceps Cisneros p. 15 figs. 1-8, 9C

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RankNameAuthor
kingdomAnimalia()
Triploblastica
Nephrozoa
Deuterostomia
phylumChordataHaeckel 1847
OlfactoresJefferies 1991
subphylumVertebrata
Gnathostomata()
Osteichthyes()
Sarcopterygii
subclassDipnotetrapodomorpha(Nelson 2006)
subclassTetrapodomorpha()
Tetrapoda()
Reptiliomorpha
RankNameAuthor
Anthracosauria
Batrachosauria()
Cotylosauria()
Amniota
Sauropsida
classReptilia
subclassParareptilia
Procolophonomorpha()
Procolophonia()
superfamilyProcolophonoidea
familyProcolophonidae
subfamilyProcolophoninae
genusProcolophonOwen 1876
speciestrigonicepsOwen 1876

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.

Diagnosis
ReferenceDiagnosis
E. H. Colbert and J. W. Kitching 1975see generic diagnosis
E. L. Lavina 1983 (Procolophon pricei)Translated: [Procolophonid with a snout shorter and more rounded than in the type secies of the genus. Vomerine teeth are arranged in shape of an inverted "V" and thus are arranged differently from Procolophon trigoniceps. The posteromedial row of palatine teeth does not extend onto anterolateral portion of the pterygoid, in contrast to the condition seen in the African species. The interpterygoidal vacuity is significantly larger than in P. trigoniceps.]
J. C. Cisneros 2008see generic diagnosis