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Coronodonidae
Taxonomy
Coronodonidae was named by Boessenecker et al. (2023).
It was assigned to Mysticeti by Boessenecker et al. (2023).
It was assigned to Mysticeti by Boessenecker et al. (2023).
Subtaxa
Synonymy list
| Year | Name and author |
|---|---|
| 2023 | Coronodonidae Boessenecker et al. p. 9 |
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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.
Fm. †Coronodonidae Boessenecker et al. 2023
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G. †Coronodon Geisler et al. 2017
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†Coronodon havensteini Geisler et al. 2017
†Coronodon newtonorum Boessenecker et al. 2023
†Coronodon planifrons Boessenecker et al. 2023
Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| R. W. Boessenecker et al. 2023 | Large toothed mysticetes (BZW = 40–60 cm, estimated body length 5–8 m) with incipient polydonty (11 upper, 12 lower teeth); wide rostra with loose premaxilla-maxilla and maxillofrontal sutures; edentulous and transversely narrow blade-like premaxilla anterior to I1; dorsally curved nasal apex; long intertemporal constriction with high sagittal crest and parallel dorsolateral margins; steeply sloping to nearly vertical occipital shield with occipital apex thrust to level of supramastoid crest; tall and vertical nuchal crest; squamosal with short, dorsoventrally deep zygomatic process bearing facet for jugal, enlarged squamosal prominence, large sternomastoid fossa; amastoid periotic with triangular anterodorsal and posterodorsal angles but highly reduced superior ridge and shallow trough-like suprameatal fossa, low and anteriorly narrow pars cochlearis with narrow anterior cochlear ridge and separated from anterior process by obtuse angle (160–180), and distally widening posterior bullar facet; wide non-rotated bulla with flattened ventral surface and median furrow, step-like profile of involucrum with flat medial face; dentition with thin smooth enamel (some lingual ridging on caniniform teeth and p1-2 only), pseudoserrations on proportionally large postcanine teeth; double rooted postcanines (P3-M3) with long root isthmus, demi-roots (except C. newtonorum), overlapping lower cheek teeth, five or more mesial denticles on premolars; posterior upper cheek teeth distally inclined; mandible with faint sutural surface for symphysis, elevated molars, lobate but subtriangular and vertical coronoid process and a mandibular condyle separated far from coronoid process. |
Measurements
No measurements are available
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| Source: subo = suborder, o = order | |||||
| Reference: Uhen 2004 | |||||
Collections (8 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Rupelian | USA (South Carolina) | Coronodon havensteini (182155 186670 229944 229945) Dorudon serratus (188994) | |
| Chattian | USA (South Carolina) | Coronodon newtonorum (229946) Coronodon planifrons (97550 229963) |