Elasmobranchii (world)

Assemblage (Japan)

Summary (Japan)

Dentition

Tooth

Edestus

Borealotodus

Serratolamna

Holocene

Miocene

Oligocene

Hexanchus

Neurocrania

Hexanchidae

C. anguineus

C. umbratile

Orodus

Carcharias

Alopias

Yurakucho

Furuya

Jinnobaru

Squalus

Spines,Rostrum

Echinorhinidae

H. perlo

P. microdon

Petalodus

Hispidaspis

Trigonotodus

Senhata M

Yamaga

Deania

Dentitions

Squalidae

S. mitsukurii

H. japanica

Ctenacanthus

Hypotodus

Megachasma

Pleistocene

Aoso

Iwaki

Dalatias

Chlamydoselachus

Centrophoridae

C. atromarginas

T. scyllium

Triodus

Jaekelotodus

Pseudocorax

Jizodo

Koderayama

Squatina

Squalus

Etomopteridae

E. pusillus

M. manazo

Hybodus

Odontaspis

Squalicorax

Ichijiku

Taga G.

Eocene

Heterodontus

Deania (serration)

Trigonognathus

T. kabeyai

P. glauca

Ptychodus

Striatolamia

Scyliorhinus

Umegase

Sekinohana

Namigata

Carcharias

Cookiecutter shark

Somniosidae

S. ichiharai

L. macrorhinus

Sphenodus

Anomotodon

Galeorhinus

Shinzato

Haratajino

Kawamagar

Alopias

Etmopterus

Pristiophoridae

D. licha

R. acutus

Synechodus

Mitsukurina

Abdounia

Omma

Godo

Cetorhinus

Trigonognathus

Squatinidae

P. japonicus

C. melanopterus

Hexanchus

Isurus

Hemipristis

Dainichi

Yatsuo G.

Cretaceous

Carcharodon

Heterodontus

Orectolobiformes

S. japonica

S. zygaena

Echinorhinus

Lamna

Negaprion

Kumano G.

Ashizawa

Isurus

Carcharodon

Heterodontidae

C. plagiosum

Squalus

Cretodus

Rhizoprionon

Pliocene

Mitsugano M.

Parotodus

Carcharodon II

Mitsukurinidae

H. japonicus

Isistius

Cretalamna

Glyphis

Ananai

Kitanagano M.

Miscellaneous

Otodus

Isurus

Alopiidae

M. owstoni

Dermal denticle

Pristiophorus

Cretoxyrhina

Zukawa

Galeorhinus

I. planus

Lamnidae

P. kamoharai

Squatina

Paleocarcharo.

Kosawa

Formation

Triakis

Intermediate tooth

Pentanchidae

C. taurus

Histology

Heterodontus

Otodus

Dainenji

Galeocerdo

Assemblages

Triakidae

O. ferox

Ginglymostoma

Parotodus

Yonabaru

Living Shark

Negaprion

Carcharhinidae

A. vulpinas

Rhincodon

Cardabiodon

Naarai

Ray

Carcharhinus

Carcharhinus I

Carcharhinus

L. ditropis

Orectolobus

Leptostylax

Chimaera

Sphyrna

Carcharhinus II

Sphyrnidae

G. eastmani

Photos

May 5, 2025

Miscellaneous

Formation

Deania (Serrations)

J-elasmo

fwkx8282@nifty.com

Fumio Nakagawa