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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).
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
Year | Name and author |
---|---|
1880 | Mesocetus laxatus Van Beneden p. 23 |
1886 | Idiocetus laxatus Van Beneden p. 63 |
1898 | Idiocetus laxatus Trouessart p. 1076 |
1904 | Idiocetus laxatus Trouessart p. 782 |
1931 | Plesiocetus laxatus Van Deinse p. 140 |
1958 | Idiocetus laxatus Misonne p. 107 |
2010 | Parietobalaena laxata Steeman p. 73 |
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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.
†Parietobalaena laxata Van Beneden 1880
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Diagnosis
No diagnoses are available
Measurements
No measurements are available
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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 - Serravallian | Belgium | Mesocetus laxatus (96462) | |
Serravallian | Netherlands | Idiocetus laxatus, Plesiocetus laxatus (75152) |