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Pachycetinae

Osteichthyes - Cetacea - Basilosauridae

Synonymy list
YearName and author
2022Pachycetinae Gingerich et al. p. 12
2023Pachycetinae van Vliet et al. p. 7
2024Pachycetinae van Vliet et al. p. 6
2025Pachycetinae van Vliet et al. p. 215

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RankNameAuthor
kingdomAnimalia()
—Bilateria
—EubilateriaAx 1987
—Deuterostomia
phylumChordataHaeckel 1874
subphylumVertebrata
superclassGnathostomata
classOsteichthyes
subclassSarcopterygii()
subclassDipnotetrapodomorpha(Nelson 2006)
subclassTetrapodomorpha()
—Tetrapoda
—Reptiliomorpha
—Anthracosauria
subclassAmphibiosauriaKuhn 1967
—Cotylosauria()
—Amniota
subclassSynapsida
—Therapsida()
infraorderCynodontia()
—Mammaliamorpha
RankNameAuthor
—Mammaliaformes
classMammalia
—Cladotheria
—Zatheria
subclassTribosphenida()
subclassTheria
—Eutheria()
—Placentalia
—Boreoeutheria
—Laurasiatheria
—Scrotifera
—Euungulata
—Artiodactylamorpha
—Artiodactyla()
—Whippomorpha
orderCetacea
—Pelagiceti
familyBasilosauridae
subfamilyPachycetinae
subfamilyPachycetinae

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.

Subfm. †Pachycetinae Gingerich et al. 2022
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G. †Antaecetus Gingerich et al. 2022
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†Platyosphys aithai Gingerich and Zouhri 2015
G. †Pachycetus Van Beneden 1883
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†Pachycetus humilis Van Beneden 1883
†Pachycetus paulsonii Brandt 1873
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Invalid names: Basilotritus uheni Goldin and Zvonok 2013 [synonym], Pachycetus robustus Van Beneden 1883 [synonym], Platyosphys einori Gritsenko 2001 [synonym], Zeuglodon rossicus Paulson in Brandt 1873 [synonym]
†Pachycetus wardii Uhen 1999
Invalid names: Basilotritus Goldin and Zvonok 2013 [synonym], Platyosphys Kellogg 1936 [synonym]
Diagnosis
ReferenceDiagnosis
P. D. Gingerich et al. 2022Pachycetinae differ from basilosaurine and dorudontine Basilosauridae in several salient features. Pachycetines have pachyosteosclerotic vertebrae not seen in Basilosaurinae or Dorudon- tinae, and they have pachyosteosclerotic ribs not seen in Dorudontinae. Cartilagenous and ligamentous connective tissue replaces synovial rib articulations. Thoracic vertebrae increase in size from front to back so rapidly that individual centra have a trapezoidal profile. Lumbar vertebrae are elongated like those of Basilosaurinae but differ in having transverse processes nearly as long anteroposteriorly as the centra from which they arise. Most vertebrae have small vascular openings that give surficial bone a distinctively pitted texture. As interpreted here, the innominate of Pachycetus differs from innominates associated with basilosaurines and dorudontines in having a much larger obturator foramen.
Measurements
No measurements are available
Composition: hydroxyapatiteo
Form: roller-shapedo
Ontogeny: modification of partso
Environment: marineo
Locomotion: actively mobileo
Life habit: aquatico
Depth habitat: surfaceo
Diet: carnivoreo
Reproduction: viviparouso
Created: 2005-03-06 14:19:05
Modified: 2017-04-17 10:41:18
Source: o = order
Reference: Uhen 2004

Age range: base of the Bartonian to the top of the Priabonian or 41.03000 to 33.90000 Ma

Collections (43 total)


Time interval Ma Country or state Original ID and collection number
Eocene56.0 - 33.9Russian Federation Archaeoceti indet. (114208)
Eocene56.0 - 33.9Ukraine Basilosaurus sp. (132383 132385 132389 132391) Zeuglodon sp. (132386)
Lutetian - Bartonian48.07 - 37.71Peru (Ica) Protocetidae indet. (73780)
Middle Eocene - Oligocene48.07 - 23.04Netherlands Archaeoceti indet. (82994)
Bartonian41.03 - 37.71Ukraine Eocetus sp. (137757)
Bartonian41.03 - 37.71Ukraine (Luhansk) Basilotritus uheni, Basilosauridae indet. (132393)
Bartonian41.03 - 37.71USA (North Carolina) Eocetus wardii (7297 7299 75518 99753 132664)
Bartonian41.03 - 37.71Russian Federation Basilosaurus sp., Eocetus sp. (123876)
Bartonian41.03 - 37.71Ukraine (Kirovograd) Basilosauridae indet. (132381) Basilotritus sp. (141002)
Bartonian41.03 - 37.71Germany (Bavaria) Basilosauridae indet., Eocetus sp. (71821)
Bartonian41.03 - 37.71USA (Virginia) Eocetus wardii (107512)
Bartonian41.03 - 37.71Netherlands Archaeoceti indet. (227706) Pachycetus sp., Pachycetus paulsonii (168386)
Bartonian41.03 - 37.71Egypt Antaecetus sp. (227707) Basilotritus sp. (45626)
Bartonian41.03 - 37.71Germany (Lower Saxony) Pachycetus sp. (211071 211080)
Bartonian41.03 - 37.71Western Sahara Pachycetus sp. (235061 235062) Platyosphys aithai (175734)
Bartonian41.03 - 37.71United Kingdom (England) Basilosaurus sp. (32915 42641)
Bartonian - Priabonian41.03 - 33.9Germany (Lower Saxony) Pachycetus sp. (211074 211075)
Bartonian - Priabonian41.03 - 33.9Ukraine (Kirovograd) Basilotritus sp. (214010)
Bartonian - Priabonian41.03 - 33.9Germany Pachycetus sp., Dorudontidae indet., Pachycetus robustus (46086)
Priabonian37.71 - 33.9Western Sahara Platyosphys indet. (206018)
Priabonian37.71 - 33.9Ukraine (Kiev) Zeuglodon paulsonii (48026)
Priabonian37.71 - 33.9Germany Pachycetus sp. (211084)
Priabonian37.71 - 33.9Ukraine (Kyiv) Platyosphys einori (57767)
Priabonian37.71 - 33.9Russian Federation Zeuglodon paulsonii (77227)
Priabonian37.71 - 33.9Germany (Lower Saxony) Pachycetus sp. (211078)
Priabonian37.71 - 33.9Ukraine Platyosphys paulsonii (48027) Zeuglodon paulsonii (48028)