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

Chichibumachi

Cetorhinus

Trigonognathus

Squatinidae

P. japonicus

C. melanopterus

Hexanchus

Isurus

Hemipristis

Dainichi

Godo

Cretaceous

Carcharodon

Heterodontus

Orectolobiformes

S. japonica

S. zygaena

Echinorhinus

Lamna

Negaprion

Yatsuo G.

Ashizawa

Isurus

Carcharodon

Heterodontidae

C. plagiosum

Squalus

Cretodus

Rhizoprionon

Pliocene

Kumano G.

Parotodus

Carcharodon II

Mitsukurinidae

H. japonicus

Dermal denticle

Isistius

Cretalamna

Glyphis

Ananai

Mitsugano M.

Miscellaneous

Otodus

Isurus

Alopiidae

M. owstoni

Histology

Pristiophorus

Cretoxyrhina

Zukawa

Kitanagano M.

Galeorhinus

I. planus

Lamnidae

P. kamoharai

Squatina

Paleocarcharo.

Kosawa

Formation

Triakis

Pseudotriakis

Pentanchidae

C. taurus

Living shark

Heterodontus

Otodus

Dainenji

Galeocerdo

Intermediate tooth

Triakidae

O. ferox

Ray

Ginglymostoma

Parotodus

Yonabaru

Negaprion

Assemblages

Carcharhinidae

A. vulpinas

Chimaera

Rhincodon

Cardabiodon

Naarai

Carcharhinus

Carcharhinus

L. ditropis

Orectolobus

Leptostylax

Sphyrna

Carcharhinus

Sphyrnidae

G. eastmani

Photo

May 28, 2025

Chichibumachi

Pseudotriakis

Deania (Serrations)

J-elasmo

fwkx8282@nifty.com

Fumio Nakagawa