Maesawa (Pliocene of Japan)

Where: Iwate, Japan (39.1° N, 141.2° E: paleocoordinates 39.8° N, 140.4° E)

• coordinate stated in text

When: Tatsunokuchi Formation, Zanclean (5.3 - 3.6 Ma)

• originally listed as Yushima. Kimura and Hasegawa (2004) call it Tatsunokuchi Fm.

Environment/lithology: open shallow subtidal; lithology not reported

• open to shallow water (changed over time), warm water

Size class: macrofossils

Preservation: original phosphate

Collection methods: surface (in situ),

Primary reference: M. Oishi, K. Ono, T. Kawakami, J. Sato, H. Nokariya and Y. Hasegawa. 1985. Pliocene baleen whales and bony-toothed bird from Iwate Prefecture, Japan (Parts I-VI). Bulletin of the Iwate Prefectural Museum 3:146-162 [M. Uhen/M. Uhen]more details

Purpose of describing collection: general faunal/floral analysis

PaleoDB collection 56300: authorized by Mark Uhen, entered by Mark Uhen on 16.11.2005

Creative Commons license: CC BY (attribution)

Taxonomic list

unclassified
  -
Bivalvia
 Arcida - Arcidae
"Navicula sp." = Arca
"Navicula sp." = Arca Linnaeus 1758 ark
 Pholadida - Myidae
Cryptomya busoensis softshell clam
 Cardiida - Tellinidae
Macoma tokyoensis tellin clam
 Cardiida - Cardiidae
Gastropoda
  -
Gastropoda indet. Cuvier 1797 snail
 Neogastropoda - Buccinidae
? Buccinum sp. Linnaeus 1758 true whelk
 Neogastropoda - Nassariidae
Nassarius sp. Duméril 1806 snail
 Neogastropoda - Turridae
"Turridae" indet. Swainson 1840 turrid
 Naticoidea - Naticidae
Neverita sp. Risso 1826 moon snail
Chondrichthyes
 Lamniformes - Odontaspididae
Odontaspis sp. Agassiz 1843 sand tiger shark
Aves
 Ornithurae -
Mammalia
 Cetacea - Cetotheriidae
Herpetocetus sp. Van Beneden 1872 whale
Asteroidea
  -
Asteroidea indet. de Blainville 1830 sea star
Anthozoa
 Scleractinia - Flabellidae
Flabellum sp. Lesson 1831 stony coral
Pinopsida
 Pinales - Taxodiaceae
Glyptostrobus europaeus Unger 1850 Chinese swamp cypress
Sequoia sp. Endlicher 1847 coast redwood
Dicotyledonae
 Urticales - Dilleniidae
Ulmus sp. Linnaeus 1753 elm
Magnoliopsida
 Fagales - Betulaceae
? Betula sp. Linnaeus 1753 birch
 Fagales - Fagaceae
Fagus sp. Linnaeus beech
Diatomophyceae
 Centrales -
 Pennales - Fragilariaceae
Coscinodiscus
  -
Coscinodiscus marginatus Ehrenberg 1843
Cyclotella
  -
Cyclotella sp. Kutzing 1834
Actinocyclus
  -
Actinocyclus ingens Rattray 1890
Stephanopyxis
  -
Stephanopyxis sp. Ehrenberg 1845