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Inermorostrum
Taxonomy
Inermorostrum was named by Boessenecker et al. (2017). Its type is Inermorostrum xenops.
It was assigned to Xenorophidae by Boessenecker et al. (2017).
It was assigned to Xenorophidae by Boessenecker et al. (2017).
Species
I. xenops (type species)
Synonymy list
| Year | Name and author |
|---|---|
| 2017 | Inermorostrum Boessenecker et al. p. 2 |
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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. †Inermorostrum Boessenecker et al. 2017
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†Inermorostrum xenops Boessenecker et al. 2017
Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| R. W. Boessenecker et al. 2017 | Inermorostrum xenops differs from all other Odontoceti (except some Ziphiidae and Physeteridae, Australodelphis, Grampus, Monodon, and Odobenocetops) in having a completely toothless maxilla and rostral portion of the maxilla shorter than 50% postorbital skull width. Inermorostrum xenops shares with other Xenorophidae, to the exclusion of all other odontocetes, several features including: (i) nasal process of premaxilla extending posteriorly to contact frontal and excluding maxilla from frontal contact; (ii) nasal process of premaxilla underlying ascending maxilla; (iii) pre- maxilla with lateral crest adjacent to the bony nares; (iv) large antorbital fossa on rostral portion of maxilla; (v) lacrimal expanded over the orbit; and (vi) frontal window posterior to orbit exposing premaxilla in ventral view. Inermorostrum xenops differs from all other Xenorophidae in possessing an anteroposteriorly short, toothless maxilla, and further differs from Cotylocara and Echovenator in lacking a deep postnarial fossa.
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Measurements
No measurements are available
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| Source: subo = suborder, o = order | |||||
| Reference: Uhen 2004 | |||||