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Semirostrum ceruttii
Taxonomy
Semirostrum ceruttii was named by Racicot et al. (2014). Its type specimen is SDSNH 65276, a skull, and it is a 3D body fossil. Its type locality is Rancho Del Rey, which is in a Piacenzian coastal sandstone/conglomerate in the San Diego Formation of California. It is the type species of Semirostrum.
Synonymy list
| Year | Name and author |
|---|---|
| 2014 | Semirostrum ceruttii Racicot 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.
†Semirostrum ceruttii Racicot et al. 2014
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Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| R. A. Racicot et al. 2014 | Stem phocoenid (Figure S4; Supplemental Experimental Procedures I and II) defined by three autapomorphies: prognathous, fused, mostly edentulous mandibular symphysis (greater than or equal to 40% of the length of complete mandible); lingually positioned cylindrical teeth with apex of crown dorsolabially directed; and deltoid shape of posterior process of the periotic (Figure 1E). |
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 2.58000 Ma
Collections (3 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Zanclean | USA (California) | Semirostrum ceruttii (154908) | |
| Piacenzian | USA (California) | Semirostrum ceruttii (type locality: 154906 154907) |