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Dalatias licha
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Family Dalatidae GOODRICH, 1909
Genus Dalatias RAFINESQUE, 1810

Dalatias licha (Bonnaterre, 1788); Yoroizame, Kitefin shark


Pliocene, Tomioka Formation, Fukushima Prefecture, Japan

15 mm H

Pliocene, Naarai Formation, Choshi-shi Chiba Prefecture, Japan



Late Miocene, Senhata Formation, Chiba Prefecture, Japan


Miocene, Tomioka Group, Haratashino Formation, Annaka-shi, Gunma Prefecture, Japan

12 mm H


Miocene, Tokigawa G., Kuzubukuro, Saitama Prefecture, Japan

4.5 mm H, 3.1 mm H

20120311

Isistius
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Order Squaliformes Goodrich, 1909
Family Squalidae Bonaparte, 1834
Genus Isistius Gill, 1864

Isistius brasiliensis (Quoi & Gaimard, 1824): Late Miocene, Hawthorn Group, Big Slough, Sarisota County, Florida

5 mm H

Isistius triangulus (Probst, 1879): Middle Miocene, Godo Formation, Tokigawa G. Kuzubukuro, Higashi-matuyama City, Saitama Prefecture

2.8 mm H


Isistius trituratus (Winkler, 1874): Early Eocene, Nanjemoy Formation, Potapaco Menber Fisher-Sullivan Bone bed ( Muddy Creek), Stafford County, Virginia

6 mm H, 5.9 mm H
20111001

Somniosus



Genus Somniosus Le Sueur, 1818

Somniosus microcephalus (Bloch et Schneider, 1801): Lower Pliocene (Zanclean), Kattendijk Formation, Doel village, Belgium

11 mm H

20111001
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Fumio Nakagawa

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