PBDB Taxon

Basic info	Taxonomic history	Classification	Included Taxa
Morphology	Ecology and taphonomy	External Literature Search	Age range and collections

Yamatocetus

Mammalia - Cetacea - Eomysticetidae

Taxonomy

Yamatocetus was named by Okazaki (2012).

It was assigned to Eomysticetidae by Okazaki (2012), Boessenecker and Fordyce (2015), Marx and Fordyce (2015), Marx et al. (2016), Fordyce and Marx (2016), Boessenecker and Fordyce (2017), Tsai and Kohno (2017), Berta (2017) and Fordyce and Marx (2018).

Species

Y. canaliculatus

Synonymy list

Year	Name and author
2012	Yamatocetus Okazaki p. 129
2015	Yamatocetus Boessenecker and Fordyce
2015	Yamatocetus Marx and Fordyce p. 4 figs. Figure 2
2016	Yamatocetus Fordyce and Marx p. 114 figs. Fig. 4
2016	Yamatocetus Marx et al. p. 107
2017	Yamatocetus Berta p. 167
2017	Yamatocetus Boessenecker and Fordyce
2017	Yamatocetus Tsai and Kohno
2018	Yamatocetus Fordyce and Marx p. 5 figs. Fig. 4

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Rank	Name	Author
kingdom	Animalia	()
—	Bilateria
—	Eubilateria	Ax 1987
—	Deuterostomia
phylum	Chordata	Haeckel 1874
subphylum	Vertebrata
superclass	Gnathostomata
—	Osteichthyes	()
subclass	Sarcopterygii	()
subclass	Dipnotetrapodomorpha	(Nelson 2006)
subclass	Tetrapodomorpha	()
—	Tetrapoda
—	Reptiliomorpha
—	Anthracosauria
subclass	Amphibiosauria	Kuhn 1967
—	Cotylosauria	()
—	Amniota
subclass	Synapsida
—	Therapsida	()
infraorder	Cynodontia	()
—	Mammaliamorpha
—	Mammaliaformes

Rank	Name	Author
class	Mammalia
—	Cladotheria
—	Zatheria
subclass	Tribosphenida	()
subclass	Theria
—	Eutheria	()
—	Placentalia
—	Boreoeutheria
—	Laurasiatheria
—	Scrotifera
—	Euungulata
—	Artiodactylamorpha
—	Artiodactyla	()
—	Whippomorpha
order	Cetacea
—	Pelagiceti
—	Neoceti
suborder	Mysticeti
—	Chaeomysticeti	()
family	Eomysticetidae
genus	Yamatocetus

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. †Yamatocetus Okazaki 2012

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†Yamatocetus canaliculatus Okazaki 2012

Diagnosis

Reference	Diagnosis
Y. Okazaki 2012	Yamatocetus canaliculatus differs from olher named eomysticetids in; without elevation at midline of nasals; with gingival grooves on both upper and lower jaws; with large supraorbital process with parallel anterior and posterior margins in dorsal view; with rather blunt tip of rostrum.

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: Duntroonian or 27.30000 to 25.20000 Ma

Collections (2 total)

Time interval	Ma	Country or state	Original ID and collection number
Chattian	28.1 - 23.03	Japan (Fukuoka)	Cetotheriidae indet. (45804)
Duntroonian	27.3 - 25.2	New Zealand (South Island)	Y. sp. (184888)