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Sousa teuszii
Taxonomy
Sotalia teuszii was named by Kukenthal (1892). It is extant. Its type specimen is Jena Natural History Museum, a skull. Its type locality is Bay of Warships, which is in a Holocene coastal horizon in Cameroon.
It was corrected as Sotalia teuszi by Hershkovitz (1966); it was recombined as Sousa teuszi by Rice (1998); it was recombined as Sousa teuszii by Jefferson and Van Waerebeek (2004), Mead and Brownell (2005), Jefferson and Rosenbaum (2014) and Jefferson (2021).
It was corrected as Sotalia teuszi by Hershkovitz (1966); it was recombined as Sousa teuszi by Rice (1998); it was recombined as Sousa teuszii by Jefferson and Van Waerebeek (2004), Mead and Brownell (2005), Jefferson and Rosenbaum (2014) and Jefferson (2021).
Synonymy list
| Year | Name and author |
|---|---|
| 1892 | Sotalia teuszii Kukenthal p. 442 figs. Pl. 21 |
| 1898 | Sotalia teuszii Trouessart p. 1028 |
| 1904 | Sotalia teuszi Trouessart p. 732 |
| 1966 | Sotalia teuszi Hershkovitz p. 25 |
| 1998 | Sousa teuszi Rice p. 103 |
| 2004 | Sousa teuszii Jefferson and Van Waerebeek p. 16 |
| 2005 | Sousa teuszii Mead and Brownell p. 732 |
| 2014 | Sousa teuszii Jefferson and Rosenbaum |
| 2021 | Sousa teuszii Jefferson p. 29 |
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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.
Sousa teuszii Kukenthal 1892
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Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| T. A. Jefferson and H. C. Rosenbaum 2014 | Sousa teuszii reaches a known maximum total length of 266 cm (less than the other species), though the sample of measured individuals is small (Fig. 5). The species is characterized by a prominent dorsal hump in all individuals (though less exaggerated in calves), ranging from 26% to 32% of body length (Ross et al. 1996), and a small dorsal fin with a more-rounded dorsal fin tip than S. plumbea (Fig. 8; see photographs in Weir 2011). Based on a very small sample (n = 2), this species appears to have more vertebrae on average (52–53 vs. as few as 49–50) than other species of Sousa. The length/breadth ratio of the cranium is 2.1–2.4. The rostrum of S. teuszii is relatively shorter than in the other species of humpback dolphins (in skull measurements reaching a known maximum of 308 mm, vs. at least 339 mm in the other species). Tooth counts are lower than in other Sousa species (27–32 vs. 31–39). The color pattern is a unform dark gray, with only slight spotting, if any. There are no shared mtDNA haplotypes with other species, and a compound diagnostic mtDNA character that distinguishes Sousa teuszii from other Sousa species; nuDNA characters diagnose S. teuszii + S. plumbea from all other Sousa (Table 2). |
Measurements
No measurements are available
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| Source: f = family, subo = suborder, o = order | |||||
| References: Uhen 2004, Nowak 1991 | |||||