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Etruridelphis
Taxonomy
Etruridelphis was named by Bianucci et al. (2009) [Bianucci et al. attribute the nme Eturidelphis to Bianucci only.].
It was assigned to Delphininae by Marx et al. (2016); and to Delphinidae by Bianucci et al. (2009), Murakami et al. (2014), Cioppi (2014) and Berta (2017).
It was assigned to Delphininae by Marx et al. (2016); and to Delphinidae by Bianucci et al. (2009), Murakami et al. (2014), Cioppi (2014) and Berta (2017).
Species
Synonymy list
| Year | Name and author |
|---|---|
| 2009 | Etruridelphis Bianucci et al. p. 279 |
| 2014 | Etruridelphis Cioppi p. 86 |
| 2014 | Etruridelphis Murakami et al. p. 492 figs. Table 1 |
| 2016 | Etruridelphis Marx et al. p. 141 |
| 2017 | Etruridelphis Berta p. 164 |
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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.
G. †Etruridelphis Bianucci et al. 2009
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Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| G. Bianucci et al. 2009 | Etruridelphis giulii differs from all delphinid species for the following combination of characters: condylobasal length about 550-600 mm, rostrum relatively elongated (about 60 % of the condylobasal length), 50-70 small teeth (diameter less than 1% of the
condylobasal length) for each tooth row, premaxillae flat and wide on the rostrum (ratio between the rostrum and the premaxillae width at mid-length of the rostrum ranging between 0.57 and 0.70), short mandibular symphysis (about 15 % of total length of the mandible), periotic with relatively narrow superior process (sensu KASUYA 1973), moderately wide tympanic bulla with ventral surface showing a “ventral keel” and a “hemispherical prominence” (sensu KASUYA 1973), malleus with ventral portion moderately narrow and with processus muscularis less elevated than in most delphinids. Among the extant delphinids, Etruridelphis giulii shows the greatest affinities with Stenella spp. but it differs in having a larger skull, premaxillae on the rostrum wider and less transversally arched, narrower superior process of the periotic and lower processus mus - cularis of the malleus (mallei of extant S. frontalis and S. clymene not examined). Etruridelphis giulii differs from the fragmentary specimen referred to Stenella rayi in the larger size of skull and the more elongated rostrum. |
Measurements
No measurements are available
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| Source: f = family, subo = suborder, o = order | |||||
| References: Uhen 2004, Nowak 1991 | |||||
Age range: base of the Zanclean to the top of the Piacenzian or 5.33300 to 2.58800 Ma
Collections (7 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Zanclean | Italy (Toscana) | E. giulii (152246) | |
| Zanclean | Italy (Sienna) | E. giulii (93310) | |
| Zanclean | Italy (Tuscany) | E. giulii (193697) | |
| Piacenzian | Italy | Steno bellardii, Delphinus giulii (47428) | |
| Piacenzian | Italy (Tuscany) | E. giulii (48652) Stenella giulii (52064) | |
| Piacenzian - Gelasian | Italy (Marche) | Steno bellardii (48646) |