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Sokatra antitra
Taxonomy
Sokatra antitra was named by Gaffney and Krause (2011). Its type specimen is UA 9769, a partial skull (Partial skull, lacking the premaxillae, basioccipital, and with damaged basisphenoid, quadrates, prootics, and opisthotics), and it is a 3D body fossil. Its type locality is MAD93-35 (SUNY), which is in a Maastrichtian channel sandstone in the Maevarano Formation of Madagascar. It is the type species of Sokatra.
Synonymy list
| Year | Name and author |
|---|---|
| 2011 | Sokatra antitra Gaffney and Krause p. 4 |
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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.
†Sokatra antitra Gaffney and Krause 2011
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Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| E. S. Gaffney and D. W. Krause 2011 | Member of the magnafamily Podocnemidera by possessing prootic partially covered by basisphenoid, and processus paroccipitalis of opisthotic completely covered ventrally. Distinguished from all other Pelomedusoides by short wall of bone posterior to columellae auris, medial to incisura columellae auris; foramen posterius canalis carotici interni formed by quadrate and prootic. Distinguished from all other Podocnemidera (except Kurmademydini) by extensive temporal emargination preventing squamosal-quadratojugal and parietal-quadratojugal contacts, and exposing quadrate in temporal margin; prootic-quadrate contact. Distinguished from pelomedusids and Araripemys by deep accessory ridge on maxilla paralleling labial ridge. Additionally characterized by incisura columellae auris enclosing columellae auris and eustachian tube closed by bone, as in pelomedusids and podocnemidids; laterally open foramen jugulare posterius, as in euraxemydids; exoccipital quadrate contact present, as in euraxemydids; and basisphenoid-quadrate contact present, as in pelomedusids, bothremydids, and podocnemidids. Lower jaw parallel sided, without any widening of the triturating surface; differs from Euraxemys, Araripemys, and pelomedusids in having a high lingual ridge forming a distinct medial margin to the triturating surface, rather than having a bladelike cross section as in Euraxemys, Araripemys, and pelomedusids. Triturating surface formed by a lingual ridge higher than labial ridge with an intervening groove or pocket. |
Measurements
No measurements are available
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| Source: subo = suborder, c = class, subp = subphylum | |||||
| References: Uetz 2005, Carroll 1988, Hendy et al. 2009 | |||||
Age range: Maastrichtian or 72.10000 to 66.00000 Ma
Collections (4 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Maastrichtian | Madagascar (Mahajanga) | Sokatra antitra (type locality: 39266 55269 122541 122542) |