Basic info | Taxonomic history | Classification | Included Taxa |
Morphology | Ecology and taphonomy | External Literature Search | Age range and collections |
Taxonomy
Phocaenopsis cornutus was named by Du Bus (1872). It is a 3D body fossil. Its type locality is Anvers, which is in a Miocene/Pliocene marine horizon in Belgium. It is the type species of Pithanodelphis.
It was recombined as Pithanodelphis cornutus by Abel (1905), Barnes (1985), Ichishima et al. (1995), Dawson (1996), Peredo et al. (2018), Godfrey and Lambert (2023).
It was recombined as Pithanodelphis cornutus by Abel (1905), Barnes (1985), Ichishima et al. (1995), Dawson (1996), Peredo et al. (2018), Godfrey and Lambert (2023).
Synonymy list
Year | Name and author |
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1872 | Phocaenopsis cornutus Du Bus p. 500 |
1874 | Phocaenopsis cornutus Vanden Broeck p. 146 |
1898 | Phocaenopsis cornutus Trouessart p. 1043 |
1904 | Phocaenopsis cornutus Trouessart p. 769 |
1905 | Pithanodelphis cornutus Abel p. 142 |
1985 | Pithanodelphis cornutus Barnes p. 3 |
1995 | Pithanodelphis cornutus Ichishima et al. p. 487 |
1996 | Pithanodelphis cornutus Dawson p. 132 |
2018 | Pithanodelphis cornutus Peredo et al. p. 16 figs. Figure 10 |
2023 | Pithanodelphis cornutus Godfrey and Lambert p. 121 |
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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.
†Pithanodelphis cornutus Du Bus 1872
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Diagnosis
Reference | Diagnosis | |
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S. J. Godfrey and O. Lambert 2023 | This small Ken- triodon pernix–size odontocete can be diagnosed on the basis of the following unique combination of characters: bizygomatic width ranging from 134 to 144 mm (but neither of the two cur- rently known specimens corresponds to a fully mature individ- ual); roughly symmetrical cranial vertex; inflated nasals elevated above other bones contributing to the vertex; exposure of each nasal on the vertex approximately as wide as it is long; interna- sal fossa moderately to deeply excavated; vertex conspicuously shortened anteroposteriorly; nasals contact or nearly contact the supraoccipital on either side of the frontals on the occipital face of the skull; maxilla-frontal contact either highly reduced or ab- sent superficially on the vertex; and small wedge-shaped frontals exposed on the vertex only between the nasals.
Pithanodelphis cornutus further diers from Sophianaecetus commenticius (Kazár, 2005, 2006) in that in the latter form, the nasals abut only anteriorly, they are not inflated, they are flat on top, and they exhibit only a faint anterolateral notch, whereas in the former, the nasals abut for almost half their length, they are inflated, they are convex dorsally, and they exhibit a prominent anterolateral notch. Unlike P. cornutus, S. commenticius does not appear to possess a posterior dorsal infraorbital foramen. In both P. cornutus and S. commenticius, the posterior margin of the maxilla is in direct contact with the supraoccipital. Pithanodelphis cornutus diers from Atocetus iquensis and A. nasalis in that its nasals are not as inflated, the anterior mar- gin of each nasal is cut by a deep vertical notch, its nasals contact or nearly contact the supraoccipital (in Atocetus spp. they re- main distant), and the frontals gain more exposure (even more in the referred specimen) between the nasals on the vertex (in Ato- cetus spp. they only sliver their way between the nasals but also preclude the nasals from making contact with the supraoccipital; for a detailed comparison of Atocetus spp. with the lectotype of P. cornutus, see Barnes, 1985a; Muizon, 1988b). |
Measurements
No measurements are available
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Source: subo = suborder, o = order | |||||
Reference: Uhen 2004 |
Age range: base of the Serravallian to the top of the Late/Upper Pliocene or 13.82000 to 2.58800 Ma
Collections (4 total)
Time interval | Ma | Country or state | Original ID and collection number |
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Langhian - Serravallian | USA (Maryland) | Pithanodelphis cornutus (231780) | |
Serravallian | USA (Maryland) | Pithanodelphis cornutus (231783) | |
Late/Upper Miocene - Late/Upper Pliocene | Belgium (Antwerpen) | Phocaenopsis cornutus (type locality: 47465) | |
Messinian - Early/Lower Pleistocene | Netherlands | Pithanodelphis cornutus (189573) |