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Coronodon

Mammalia - Cetacea - Coronodonidae

Synonymy list
YearName and author
2017Coronodon Geisler et al. p. 1 figs. Figs. 1-3
2023Coronodon Boessenecker et al. p. 18

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RankNameAuthor
kingdomAnimalia()
Bilateria
EubilateriaAx 1987
Life
Deuterostomia
phylumChordataHaeckel 1874
subphylumVertebrata
superclassGnathostomata
Osteichthyes()
subclassSarcopterygii()
subclassDipnotetrapodomorpha(Nelson 2006)
subclassTetrapodomorpha()
Tetrapoda
Reptiliomorpha
Anthracosauria
subclassAmphibiosauriaKuhn 1967
Cotylosauria()
Amniota
subclassSynapsida
Therapsida()
infraorderCynodontia()
Mammaliamorpha
Mammaliaformes
RankNameAuthor
classMammalia
Theriamorpha(Rowe 1993)
Theriiformes()
Trechnotheria
Cladotheria
Zatheria
subclassTribosphenida()
subclassTheria
Eutheria()
Placentalia
Boreoeutheria
Laurasiatheria
Scrotifera
Euungulata
Artiodactylamorpha
Artiodactyla()
Whippomorpha
orderCetacea
Pelagiceti
Neoceti
suborderMysticeti
familyCoronodonidae
genusCoronodon

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. †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
ReferenceDiagnosis
J. H. Geisler et al. 2017Coronodon has the following mysticete synapomorphies: supra- occipital level with temporal fossa (character 25: state 1), broad basioccipital crests (39: 2), all cusps of posterior teeth subequal (99: 1), upturned antorbital process of maxilla (100: 1), and splayed basal cusps on posterior teeth (206: 1) (Figures 1, 2, S1, and S2; Data S1). Like some archaeocetes [8], its rostrum is twisted counterclockwise in anterior view (Figure 3). Corono- don havensteini is unique in having anterior lower molars labially overlapping posterior lower molars (Figure 2).
R. W. Boessenecker et al. 2023Species of Coronodon are large toothed mysticetes (ca. BZW = 460 mm) differing from unnamed coronodonid genus (represented by ChM PV 5720 and CCNHM 214) in slightly smaller size, possessing more elongate intertemporal constriction with tall sagittal crest (length of crest = 34% of BZW, v. 20% of BZW in ChM PV 5720), wider and dorsoventrally shallower maxilla with straight (rather than concave) lateral edge; periotic with multiple (rather than single) posteroexternal foramina.
Measurements
No measurements are available
Composition: hydroxyapatitesubo
Form: roller-shapedo
Ontogeny: modification of partso
Environment: marinesubo
Locomotion: actively mobileo
Life habit: aquaticsubo
Depth habitat: surfaceo
Diet: carnivoresubo
Diet 2: suspension feedersubo
Reproduction: viviparouso
Created: 2005-03-06 14:20:41
Modified: 2005-03-06 16:34:40
Source: subo = suborder, o = order
Reference: Uhen 2004

Age range: base of the Rupelian to the top of the Chattian or 33.90000 to 23.03000 Ma

Collections (7 total)


Time interval Ma Country or state Original ID and collection number
Rupelian33.9 - 28.1USA (South Carolina) C. havensteini (182155 186670 229944 229945)
Chattian28.1 - 23.03USA (South Carolina) C. newtonorum (229946) C. planifrons (97550 229963)