|Basic info||Taxonomic history||Classification||Relationships|
|Morphology||Ecology and taphonomy||External Literature Search||Age range and collections|
Reptilia - Procolophonidae
|Year||Name and author|
|1851||Leptopleuron lacertinum Owen p. 284|
|1852||Telerpeton elginense Mantell p. 100 figs. Pl. 4|
|1856||Telerpeton elginense Roemer p. 785|
|1861||Leptopleuron lacertinum Owen p. 284|
|1939||Telerpeton elginense Huene p. 508|
|1946||Leptopleuron lacertinum Colbert p. 258|
|2010||Leptopleuron lacertinum Saila p. 3|
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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.
|L. K. Saila 2010||Small procolophonid reptile, reaching 270 mm in snout-tail length in (sub)adults. Within Procolophonoidea, Leptopleuron is characterised by the following unique autapomorphies: vomerine dentition consisting of a tall and a short pair of fangs; frontals narrow anterior to the orbitotemporal openings; V-shaped groove on the jugal; anterior tip of the jugal in contact with the posterolateral extension of the nasal; minimal contact between the jugal and the postorbital; two
ﬂattened, triangular spines of equal size on the quadratojugal; occipital condyle strongly tripartite; metotic foramen not surrounded by bone; ascending process of basisphenoid foreshortened, forming a robust ﬂat ended expansion, and with lateral lamella; processus infrastapedialis columella aligned with long axis of footplate; loss of foramen for nerve IX on ventral ramus of the opisthotic; posterior opening of vidian canal behind the basipterygoid process; facial nerve foramen not enclosed by the prootic; transverse process of prootic rests on the dorsal surface of the opisthotic paraoccipital process; basal tubera of basioccipital covered ventrally by basal tubera of basiphenoid; broad medial ridge of pleurocentra of the dorsal vertebrae divided into three separate ridges by two deep grooves on each pleurocentrum; distinct three-fold depression pattern on the ventral side of ischium; ﬁfth pedal digit has only two phalanges, with proximal phalanx equal in length to two proximal phalanges of digit four.