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Taxonomy
Romaleodelphis pollerspoecki was named by Sanchez-Posada et al. (2024). Its type specimen is SNSB-BSPG 1992 I 10, a partial skull (incomplete skull (missing much of the basicranium, anterior apex of the rostrum, rostral portions of the maxilla, and posterior margin of the mandible). Both pe), and it is a 3D body fossil. Its type locality is Pucking, which is in an Aquitanian offshore claystone in the Ebelsberg Formation of Austria. It is the type species of Romaleodelphis.
Synonymy list
| Year | Name and author |
|---|---|
| 2024 | Romaleodelphis pollerspoecki Sanchez-Posada et al. p. 5 figs. Figs. 3–9 |
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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.
†Romaleodelphis pollerspoecki Sanchez-Posada et al. 2024
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Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| C. Sanchez-Posada et al. 2024 | Romaleodelphis pollerspoecki differs from Chilcacetus in (a) the absence of a cavity between the nasals and presphenoid, (b) the presence of ankylosis for the symphysis of the mandibles, (c) the dentaries nearly completely fused, (d) the palatine only exposed laterally to the lateral lamina of the pterygoid, (e) a circle-shaped zygomatic process of the squamosal in lateral view, (f) an articular rim on the lateral surface of the periotic, and (g) a square-shaped pars cochlearis of the periotic in ventral view. It differs from Argyro- cetus bakersfieldensis in (a) the lack of a deep lateral groove along the rostrum and (b) the palatine only exposed laterally to the lateral lamina of the pterygoid. It differs from Argyrocetus joaquinensis in (a) a widening of the premaxillae at the rostrum base, (b) a dorsal opening of the mesorostral groove anterior to the rostrum base narrower than the premaxilla, (c) the palatine only exposed laterally to the lateral lamina of the pterygoid, and (d) a circle-shaped zygomatic process of the squamosal in lateral view. It differs from Macrodelphinus in (a) a widening of the premaxillae at the rostrum base and (b) the palatine only exposed laterally to the lateral lamina of the pterygoid. It differs from Argyrocetus patagonicus in (a) a widening premaxillae at the rostrum base, (b) a dorsal opening of the mesorostral groove anterior to the rostrum base narrower than the premaxilla, (c) the palatine only exposed laterally to the lateral lamina of the pterygoid, and (d) a circle-shaped zygomatic process of the squamosal in lateral view. |
Measurements
No measurements are available
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| Source: subo = suborder, o = order | |||||
| Reference: Uhen 2004 | |||||
Age range: Aquitanian or 23.03000 to 20.44000 Ma
Collections: one only
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Aquitanian | Austria | Romaleodelphis pollerspoecki (type locality: 237480) |