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Parietobalaena laxata

Mammalia - Cetacea

Taxonomy
Mesocetus laxatus was named by Van Beneden (1880) [no type specimen listen in Van Beneden (1880); lectotype after Steeman (2010)]. Its type specimen is lectotype IRScNB CtM 727/Reg 61, a partial skeleton (left & right periotics and tympanics, occipital condyle, centra of all cervical and first to seventh thoracic vertebrate), and it is a 3D body fossil. Its type locality is Deurne (Fort 1), Deurne Sand, which is in a Tortonian lagoonal sandstone in the Diest Formation of Belgium.

It was recombined as Idiocetus laxatus by Van Beneden (1886), Trouessart (1898), Trouessart (1904) and Misonne (1958); it was recombined as Plesiocetus laxatus by Van Deinse (1931); it was recombined as Parietobalaena laxata by Steeman (2010).

Synonymy list
YearName and author
1880Mesocetus laxatus Van Beneden p. 23
1886Idiocetus laxatus Van Beneden p. 63
1898Idiocetus laxatus Trouessart p. 1076
1904Idiocetus laxatus Trouessart p. 782
1931Plesiocetus laxatus Van Deinse p. 140
1958Idiocetus laxatus Misonne p. 107
2010Parietobalaena laxata Steeman p. 73

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

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.

Parietobalaena laxata Van Beneden 1880
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Diagnosis
No diagnoses are available
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: Serravallian or 13.82000 to 11.62000 Ma

Collections (2 total)


Time interval Ma Country or state Original ID and collection number
Langhian - Serravallian15.97 - 11.62Belgium Mesocetus laxatus (96462)
Serravallian13.82 - 11.62Netherlands Idiocetus laxatus, Plesiocetus laxatus (75152)