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Glaucabalaena inopinata
Taxonomy
Glaucabalaena inopinata was named by Bisconti et al. (2024). Its type specimen is MGPT-PU 19915, a partial skull (posterolateral corners of the skull (including parts of both squamosals, as well as exoccipital and periotics) and a proximal fragment of a mandibular ramus), and it is a 3D body fossil. Its type locality is Asti (general), which is in a Piacenzian coastal sandstone in the Sabbie di Asti Formation of Italy. It is the type species of Glaucabalaena.
Synonymy list
| Year | Name and author |
|---|---|
| 2024 | Glaucabalaena inopinata Bisconti et al. p. 5 |
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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.
†Glaucabalaena inopinata Bisconti et al. 2024
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Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| M. Bisconti et al. 2024 | Glaucabalaena is included within Eschrichtiidae because it shows the fol-
lowing combination of characters: transversely elongated pars cochlearis of periotic, short anterior process of the periotic with irregular outline, robust and well-developed angular process of the mandible, which protrudes posteriorly and ventrally, dorsally-faced articular surface of mandibular condyle located on the top of a short and mainly cylindrical rising. It differs from Eschrichtioides because the rising of the mandibular condyle is lower, the angular process is larger, and its total body length is estimated to be about 30% shorter than the length of E. gastaldii. It differs from Eschrichtius because the anteroposterior length of its mandibular condyle is half the length of that of the extant gray whale. It differs from Gricetoides because it shows a deep and long facial sulcus in the posterior process and because it shows a well-developed and protruding posterolateral corner of the anterior process of the periotic. |
Measurements
No measurements are available
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| Source: subo = suborder, o = order | |||||
| Reference: Uhen 2004 | |||||
Age range: Piacenzian or 3.60000 to 2.58000 Ma
Collections: one only
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Piacenzian | Italy | Glaucabalaena inopinata (type locality: 235996) |