PBDB Collection

Numata Town, Pliocene: Zanclean, Japan

List of taxa

Where & when

Geology

Taphonomy & methods

Metadata & references

Taxonomic list

Mammalia - Sirenia - Dugongidae

	Sirenia indet. Illiger 1811	Furusawa et al. 1993
	Hydrodamalis perhaps?
	= Hydrodamalis spissa Furusawa 1988	Furusawa and Numata Fossil Research Group 1990
	synonym of Hydrodamalis cuestae
Mammalia - Cetacea - Phocoenidae

	Numataphocoena yamashitai n. gen., n. sp. Ichishima and Kimura 2000		1 specimen
	(3 measurements)
Mammalia - Cetacea - Cetotheriidae

	Herpetocetinae indet. Steeman 2007	Tanaka et al. 2018	2 specimens
	n. gen. n. sp.
Mammalia - Cetacea - Balaenidae

	Balaenidae indet. (Gray 1821)	Oishi and Hasegawa 1995	1 specimen
	original and current combination Balanadae

	Balaenula sp. Van Beneden 1872	Oishi and Hasegawa 1995	1 specimen
Mammalia - Cetacea - Balaenopteridae

	Balaenopteridae indet. Gray 1864	Oishi and Hasegawa 1995

	Balaenoptera cf. acutorostrata Lacépède 1804	Oishi and Hasegawa 1995	1 specimen
Mammalia - Carnivora - Otariidae

	Otariidae indet. (Gray 1825)	Yamashita and Kimura 1990	1 specimen
	also see reference 16986
Mammalia - Carnivora - Odobenidae

	Odobenus sp. Brisson 1762	Kimura and Furusawa 1990	1 specimen
	= Odobenini indet. Allen 1880	Kohno et al. 1995
see common names

Geography

Country:	Japan	State/province:	Hokkaido
Coordinates:	43.8° North, 141.9° East (view map)
Paleocoordinates:	44.0° North, 141.3° East
Basis of coordinate:	stated in text

Time

Period:	Neogene	Epoch:	Pliocene
Stage:	Zanclean	10 m.y. bin:	Cenozoic 6
Key time interval:	Zanclean
Age range of interval:	5.33300 - 3.60000 m.y. ago

Stratigraphy

Geological group:

Fukagawa

Formation:

Horokaoshirarika

Lithology and environment

Primary lithology:	gray,blue sandstone
Secondary lithology:	tuff
Includes fossils?	Y
Lithology description: dark gray to dark bluish gray sandstone intercalated with a thin layer of pumice tuff bed named the Ops Tuff
Environment:	marine indet.

Taphonomy

Modes of preservation:	body,original phosphate
Size of fossils:	macrofossils
Spatial orientation:	preferred
Preservation of anatomical detail:	good
Articulated whole bodies:	some

Collection methods and comments

Collection methods:	selective quarrying,surface (in situ),field collection
Reason for describing collection:	taxonomic analysis

Metadata

Also known as:	Numata-cho
Database number:	45803
Authorizer:	M. Uhen	Enterer:	M. Uhen
Modifier:	M. Uhen	Research group:	vertebrate
Created:	2004-12-03 07:00:52	Last modified:	2019-10-01 22:13:24
Access level:	the public	Released:	2004-12-03 07:00:52
Creative Commons license:	CC BY

Reference information

Primary reference:

12144.

H. Ichishima and M. Kimura. 2000. A new fossil porpoise (Cetacea; Delphinoidea; Phocoenidae) from the early Pliocene Horokaoshirarika Formation, Hokkaido, Japan. Journal of Vertebrate Paleontology 20(3):561-576 [M. Uhen/M. Uhen/M. Uhen]

Secondary references:

70357		H. Furusawa. 2005. Evolution of the North Pacific Sirenia (Hydrodamalinae) and their paleoenvironment. Fossils 77:29-33 [M. Uhen/M. Uhen]
18820		H. Furusawa, T. Maeda, S. Yamashita, T. Sagayama, Y. Igarashi and M. Kimura. 1993. Geologic age and paleoenvironment of marine mammal fossils from Numata-cho, Hokkaido. Chikyu Kagaku) 47(2):133-146 [M. Uhen/M. Uhen]
18821		H. Furusawa and Numata Fossil Research Group. 1990. Discovery and significance of the Takikawa sea cow (Hydrodamalis spissa) from Numata-cho, Uryu-gun, Hokkaido, Japan. Earth Science 44(4):224-228 [M. Uhen/M. Uhen]
34675		M. Kimura and H. Furusawa. 1990. Fossils from the Ishikari Lowland (Mammals 4-Pinnipedia). Atlas of Japanese Fossils 62:372 [M. Uhen/M. Uhen/M. Uhen]
33319		T. Kimura. 2009. Review of the fossil balaenids from Japan with a re-description of Eubalaena shinshuensis (Mammalia, Cetacea, Mysticeti). Quaderni del Museo di Storia Naturale di Livorno 22:3-21 [M. Uhen/M. Uhen]
34674		N. Kohno, Y. Tomida, Y. Hasegawa and H. Furusawa. 1995. Pliocene tusked odobenids (Mammalia: Carnivora) in the Western North Pacific, and their paleobiogeography. Bulletin of the National Science Museum, Tokyo Series C (Geology & Paleontology) 21(3, 4):111-131 [M. Uhen/M. Uhen]
16986		S. Miyazaki, H. Horikawa, N. Kohno, K. Hirota, M. Kimura, Y. Hasegawa, Y. Tomida, L. G. Barnes, and C. E. Ray. 1995. Summary of the fossil record of pinnipeds of Japan, and comparisons with that from the eastern North Pacific. The Island Arc 3:361-372 [M. Uhen/M. Uhen]
12148		M. Oishi and Y. Hasegawa. 1995. A list of fossil cetaceans in Japan. The Island Arc 3:493-505 [M. Uhen/M. Uhen/M. Uhen]
48277		Y. Tanaka, H. Furusawa, and L. G. Barnes. 2018. Fossil herpetocetine baleen whales (Cetacea, Mysticeti, Cetotheriidae) from the lower Pliocene Horokaoshirarika Formation at Numata, Hokkaido, northern Japan. Paleontological Research 22(4):295-306 [M. Uhen/L. Petruny/M. Uhen]
58923		S. Yamashita and M. Kimura. 1990. Occurrence of Early Pliocene otariid fossil in Numata-cho, Hokkaido. Chikyu Kagaku 44:53-60 [M. Uhen/M. Uhen]