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Iberoccitanemys atlanticum
Taxonomy
Polysternon atlanticum was named by Lapparent de Broin and Murelaga (1996). Its type specimen is MCNAV, Gasteiz #6316, a partial shell (isolated nuchal bone), and it is a 3D body fossil. Its type locality is Laño L1A, which is in a Campanian coastal sandstone/siltstone in the Vitoria Formation of Spain.
It was recombined as Iberoccitanemys atlanticum by Pérez-García et al. (2021).
It was recombined as Iberoccitanemys atlanticum by Pérez-García et al. (2021).
Synonyms
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Synonymy list
| Year | Name and author |
|---|---|
| 1996 | Polysternon atlanticum Lapparent de Broin and Murelaga |
| 2002 | Elochelys convenarum Laurent et al. |
| 2006 | Polysternon atlanticum Gaffney et al. p. 68 |
| 2006 | Elochelys convenarum Gaffney et al. p. 69 |
| 2010 | Elochelys convenarum Pérez-García et al. |
| 2012 | Iberoccitanemys convenarum Pérez-García et al. p. 223 figs. figs 2, 3a-d, 4a-b |
| 2012 | Polysternon atlanticum Rabi et al. p. 662 |
| 2017 | Polysternon atlanticum Pérez-García |
| 2021 | Iberoccitanemys atlanticum Pérez-García et al. |
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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.
†Iberoccitanemys atlanticum Lapparent de Broin and Murelaga 1996
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Invalid names: Elochelys convenarum Laurent et al. 2002 [synonym]
Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| F. de. Lapparent de Broin and X. Murelaga 1996 | different de I'espece-type P provinciak, de Fuveau, par la forme plus arrondie et plus petite de la carapace (11 it 32 em de longueur), la vertebrale 1 moins large et I'absence des fines stries paralleles sur la carapace dorsale. | |
| E. S. Gaffney et al. 2006 | ‘‘Differs from the type species P. provinciale, from Fuveau, by the smaller shell (11 to 32 cm long), the vertebral 1 narrowest (not covering all the nuchal posterior border or slightly wider than the nuchal posterior border, not much wider) and the absence of the very thin striation of parallel streaks on the dorsal carapace’’ (Lapparent de Broin and Murelaga, 1996). | |
| E. S. Gaffney et al. 2006 (Elochelys convenarum) | A species of Elochelys differing from E. perfecta in having a larger shell; nuchal plate wider than long with very short anterior margin and strongly expanded posterior part; first peripheral plate with very short posterior margin; suprapygal plate present; first marginal scute square-shaped, covering more than half length of nuchal plate; first vertebral scute wider anteriorly with lateral margin lying on lateral part of first peripheral; second and third vertebral scutes roughly as long as wide; anterior lobe of the plastron with nearly straight anterior margin; intergular very wide posteriorly; shorter intergulo-humeral sulcus and longer intergulo-pectoral sulcus (Laurent et al., 2002). | |
| A. Pérez-García et al. 2021 | Member of Foxemydina with the following autapomorphies: carapace rectangular with straight or slightly depressed anterior margin; maximum carapace width in its posterior half; presence of six neurals and, therefore, sagittal contact of the last three pairs of costals; square first pair of marginals, covering more than half the lateral nuchal length. In addition, it is characterized by the following unique character combination: nuchal approximately as wide as long, with a short anterior margin (shared with Polysternon provinciale and Foxemys mechinorum); slightly curved lateral margins of the posterior plastral lobe (shared with Foxemys mechinorum); shallow and wide anal notch (shared with Foxemys mechinorum); large intergular, reaching the pectorals and preventing medial contact between the humerals (shared with Elochelys perfecta); pectoral-abdominal sulci very close to the anterior mesoplastral margins (shared with Polysternon provinciale and Foxemys mechinorum). |
Measurements
No measurements are available
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| Source: subo = suborder, c = class, subp = subphylum | |||||
| References: Uetz 2005, Hendy et al. 2009, Carroll 1988 | |||||
Age range: base of the Late/Upper Campanian to the top of the Late/Upper Maastrichtian or 83.50000 to 66.00000 Ma
Collections (8 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Late/Upper Campanian | Spain (Castilla y Leon) | Iberoccitanemys convenarum (48861 193947) Polysternon atlanticum (28406 37199) | |
| Late/Upper Campanian - Early/Lower Maastrichtian | Spain (Castilla-La Mancha) | Bothremydidae indet. (91781) Iberoccitanemys convenarum (128273) | |
| Late/Upper Maastrichtian | Spain (Burgos) | Polysternon atlanticum (176782) | |
| Late/Upper Maastrichtian | France (Haute-Garonne) | Elochelys sp. (67196) |