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ŽÊ^‚̃XƒP[ƒ‹ƒo[‚Í1cm; Scale bar =1 cm

ƒvƒ]ƒVƒAiƒvƒ]ƒVƒAjƒIƒŠƒGƒ“ƒ^ƒŠƒX
Puzosia (Puzosia) orientalis Matsumoto
ŽY’nEŽYo‘w™Ã
Occurrence
’†ì’¬@‰ÚˆÎ‘wŒQ²‹v‘w
Nakagawa Town
Yezo Group, Saku Formation
Žž‘ã
Age
’†¶‘ã”’ˆŸ‹IŒãŠú@ƒ`ƒ…[ƒƒjƒAƒ“
Late Cretaceous Turonian
ÌWŽÒ
Collector
Žû‘ ”Ô†FNMA00096

ŽÊ^‚̃XƒP[ƒ‹ƒo[‚Í1cm; Scale bar =1 cm

ƒvƒ]ƒVƒAiƒƒ\ƒvƒ]ƒVƒAjƒ`ƒ”ƒFƒ“ƒVƒX
Puzosia (Mesopuzosia) chivensis Arkhanguelsky
ŽY’nEŽYo‘w™Ã
Occurrence
’†ì’¬@‰ÚˆÎ‘wŒQ²‹v‘w
Nakagawa Town
Yezo Group, Saku Formation
Žž‘ã
Age
’†¶‘ã”’ˆŸ‹IŒãŠú@ƒ`ƒ…[ƒƒjƒAƒ“
Late Cretaceous Turonian
ÌWŽÒ
Collector
–x“à@^
Žû‘ ”Ô†FNMA00205

ŽÊ^‚̃XƒP[ƒ‹ƒo[‚Í1cm; Scale bar =1 cm

ƒvƒ]ƒVƒA@ƒTƒCƒ“ƒgƒEƒ‹ƒV
Puzosia saintoursi
ŽY’nEŽYo‘w™Ã
Occurrence
ƒ}ƒ_ƒKƒXƒJƒ‹
Madagascar
Žž‘ã
Age
’†¶‘ã”’ˆŸ‹IŒãŠú@ƒAƒ‹ƒrƒAƒ“
Late Cretaceous Albian
ÌWŽÒ
Collector
w“ü
Žû‘ ”Ô†FNMA00347

ŽÊ^‚̃XƒP[ƒ‹ƒo[‚Í1cm; Scale bar =1 cm

ƒvƒ]ƒVƒAiƒƒ\ƒvƒ]ƒVƒAjƒ^ƒJƒnƒVƒC
Puzosia (Mesopuzosia) takahashii (Matsumoto)
ŽY’nEŽYo‘w™Ã
Occurrence
¬•½’¬@‰ÚˆÎ‘wŒQ
Obira Town
Yezo Group,
Žž‘ã
Age
’†¶‘ã”’ˆŸ‹IŒãŠú@ƒ`ƒ…[ƒƒjƒAƒ“
Late Cretaceous Turonian
ÌWŽÒ
Collector
•l–{@–¾
Žû‘ ”Ô†FNMA00444

ŽÊ^‚̃XƒP[ƒ‹ƒo[‚Í1cm; Scale bar =1 cm

ƒvƒ]ƒVƒAiƒƒ\ƒvƒ]ƒVƒAjƒCƒ“ƒhƒpƒVƒtƒBƒJ
Puzosia (Mesopuzosia) indopacifica (KOSSMAT)
ŽY’nEŽYo‘w™Ã
Occurrence

¬•½’¬’B•z@‰ÚˆÎ‘wŒQ
Obira Town, Tappu

Yezo Group,

Žž‘ã
Age
’†¶‘ã”’ˆŸ‹IŒãŠú@ƒ`ƒ…[ƒƒjƒAƒ“
Late Cretaceous Turonian
ÌWŽÒ
Collector
‰¡ˆäŠˆé
Žû‘ ”Ô†FKYC486

ŽÊ^‚̃XƒP[ƒ‹ƒo[‚Í1cm; Scale bar =1 cm

ƒvƒ]ƒVƒAiƒƒ\ƒvƒ]ƒVƒAjƒCƒ“ƒ^[ƒƒfƒBƒA
Puzosia (Mesopuzosia) intermedia (KOSSMAT) ?
ŽY’nEŽYo‘w™Ã
Occurrence
ŽY’n•s–¾@‰ÚˆÎ‘wŒQ
Unknown
Yezo Group,
Žž‘ã
Age
’†¶‘ã”’ˆŸ‹IŒãŠú@ƒ`ƒ…[ƒƒjƒAƒ“
Late Cretaceous Turonian
ÌWŽÒ
Collector
‰¡ˆäŠˆé
Žû‘ ”Ô†FKYCH120

ŽÊ^‚̃XƒP[ƒ‹ƒo[‚Í1cm; Scale bar =1 cm

ƒvƒ]ƒVƒAiƒƒ\ƒvƒ]ƒVƒAjƒpƒVƒtƒBƒJ
Puzosia (Mesopuzosia) pacifica MATSUMOTO
ŽY’nEŽYo‘w™Ã
Occurrence
“Ï‘O’¬ŒÃ’O•Ê@‰ÚˆÎ‘wŒQ
Tomamae Town, Kotambetsu
Yezo Group,
Žž‘ã
Age
’†¶‘ã”’ˆŸ‹IŒãŠú@ƒ`ƒ…[ƒƒjƒAƒ“
Late Cretaceous Turonian
ÌWŽÒ
Collector
‰¡ˆäŠˆé
Žû‘ ”Ô†FKYC257

ŽÊ^‚̃XƒP[ƒ‹ƒo[‚Í1cm; Scale bar =1 cm

ƒWƒ“ƒ{ƒCƒZƒ‰ƒX@ƒvƒ‰ƒkƒ‰ƒ`ƒtƒHƒ‹ƒ
Jimboiceras planulatiforme (Jimbo)
ŽY’nEŽYo‘w™Ã
Occurrence
—[’£Žs@‰ÚˆÎ‘wŒQ
Yubari City
Yezo Group,
Žž‘ã
Age
’†¶‘ã”’ˆŸ‹IŒãŠú@ƒ`ƒ…[ƒƒjƒAƒ“
Late Cretaceous Turonian
ÌWŽÒ
Collector
•x“cW‰›

Žû‘ ”Ô†FKYC736

‰¡ˆäŠˆéƒRƒŒƒNƒVƒ‡ƒ“

ŽÊ^‚̃XƒP[ƒ‹ƒo[‚Í1cm; Scale bar =1 cm

ƒpƒLƒfƒXƒ‚ƒZƒ‰ƒX@ƒpƒLƒfƒXƒRƒCƒf
Pachydesmoceras pachydescoide Matsumoto
ŽY’nEŽYo‘w™Ã
Occurrence
’†ì’¬@‰ÚˆÎ‘wŒQ
Nakagawa Town
Yezo Group,
Žž‘ã
Age
’†¶‘ã”’ˆŸ‹IŒãŠúƒ`ƒ…[ƒƒjƒAƒ“
Late Cretaceous Turonian
ÌWŽÒ
Collector
Eˆõ
Žû‘ ”Ô†FNMA00195

ŽÊ^‚̃XƒP[ƒ‹ƒo[‚Í1cm; Scale bar =1 cm

ƒpƒLƒfƒXƒ‚ƒZƒ‰ƒX@ƒRƒXƒ}ƒ`ƒC
Pachydesmoceras kossmati Matsumoto
ŽY’nEŽYo‘w™Ã
Occurrence
’†ì’¬@‰ÚˆÎ‘wŒQ@¼’m—ÇŽu“à‘wH
Nakagawa Town
Yezo Group, Nishichirashinai Formation?
Žž‘ã
Age
’†¶‘ã”’ˆŸ‹IŒãŠú@ƒRƒjƒAƒVƒAƒ“
Late Cretaceous Coniasian
ÌWŽÒ
Collector
–x“à@^
Žû‘ ”Ô†FNMA00208

ŽÊ^‚̃XƒP[ƒ‹ƒo[‚Í1cm; Scale bar =1 cm

ƒfƒXƒ‚ƒZƒ‰ƒXiƒVƒ…[ƒhƒEƒŠƒCƒQƒ‰[jƒWƒƒƒ|ƒjƒJƒ€
Desmoceras (Pseudouhligella) japonicum Yabe
ŽY’nEŽYo‘w™Ã
Occurrence
’†ì’¬@‰ÚˆÎ‘wŒQ@²‹vì‘w
Nakagawa Town, Yasukawa
Yezo Group, Sakugawa Formation
Žž‘ã
Age
’†¶‘ã”’ˆŸ‹IŒãŠú@ƒZƒmƒ}ƒjƒAƒ“
Late Cretaceous Cenomanian
ÌWŽÒ
Collector
Žû‘ ”Ô†FNMA00010

ŽÊ^‚̃XƒP[ƒ‹ƒo[‚Í1cm; Scale bar =1 cm

ƒfƒXƒ‚ƒZƒ‰ƒX@ƒGƒ]ƒGƒ“ƒ[
Desmoceras ezoense
ŽY’nEŽYo‘w™Ã
Occurrence
’†ì’¬@‰ÚˆÎ‘wŒQ@²‹vì‘w
Nakagawa Town
Yezo Group, Sakugawa Formation
Žž‘ã
Age
’†¶‘ã”’ˆŸ‹IŒãŠú@ƒZƒmƒ}ƒjƒAƒ“
Late Cretaceous Cenomanian
ÌWŽÒ
Collector
¼–ìFM

Žû‘ ”Ô†FNMA00154

•¶Œ£G‘ìE¼–ìi1999j–kŠC“¹’†ì’nˆæ‚̃Zƒmƒ}ƒjƒAƒ“ŠKƒAƒ“ƒ‚ƒiƒCƒgŒQWD’†ì’¬‹½“yŽ‘—¿ŠÙ‹I—vuŽ©‘RŽ‚ÌŒ¤‹†v‘æ‚Q†C1-40D

ŽÊ^‚̃XƒP[ƒ‹ƒo[‚Í1cm; Scale bar =1 cm

ƒfƒXƒ‚ƒZƒ‰ƒX@ƒ‰ƒeƒBƒhƒ‹ƒTƒ^ƒ€
Desmoceras latidorsatum
ŽY’nEŽYo‘w™Ã
Occurrence
ƒ}ƒ_ƒKƒXƒJƒ‹
Madagascar
Žž‘ã
Age
’†¶‘ã”’ˆŸ‹IŒãŠú@ƒAƒ‹ƒrƒAƒ“
Late Cretaceous Albian
ÌWŽÒ
Collector
w“ü
Žû‘ ”Ô†FNMA00322

ŽÊ^‚̃XƒP[ƒ‹ƒo[‚Í1cm; Scale bar =1 cm

ƒ_ƒƒVƒeƒX@ƒ_ƒƒV
Damesites damesi (Jimbo)
ŽY’nEŽYo‘w™Ã
Occurrence
’†ì’¬@‰ÚˆÎ‘wŒQƒIƒ\ƒEƒVƒiƒC‘w
Nakagawa Town
Yezo Group, Osoushinai Formation
Žž‘ã
Age
’†¶‘ã”’ˆŸ‹IŒãŠú@ƒJƒ“ƒpƒjƒAƒ“
Late Cretaceous Campanian
ÌWŽÒ
Collector
Eˆõ
Žû‘ ”Ô†FNMA00231

ŽÊ^‚̃XƒP[ƒ‹ƒo[‚Í1cm; Scale bar =1 cm

ƒ_ƒƒVƒeƒX@ƒZƒ~ƒRƒXƒ^[ƒ^ƒX
Damesites semicostatus Matsumoto
ŽY’nEŽYo‘w™Ã
Occurrence
’†ì’¬@‰ÚˆÎ‘wŒQ@ƒIƒ\ƒEƒVƒiƒC‘w
Nakagawa Town
Yezo Group, Osoushinai Formation
Žž‘ã
Age
’†¶‘ã”’ˆŸ‹IŒãŠú@ƒJƒ“ƒpƒjƒAƒ“
Late Cretaceous Campanian
ÌWŽÒ
Collector
Eˆõ
Žû‘ ”Ô†FNMA00417

ŽÊ^‚̃XƒP[ƒ‹ƒo[‚Í1cm; Scale bar =1 cm

ƒ_ƒƒVƒeƒX@ƒXƒKƒ^
Damesites sugata (FORBES)
ŽY’nEŽYo‘w™Ã
Occurrence

“Ï‘O’¬ŒÃ’O•Ê@‰ÚˆÎ‘wŒQ

Tomamae Town
Yezo Group

Žž‘ã
Age
’†¶‘ã”’ˆŸ‹IŒãŠú@ƒTƒ“ƒgƒjƒAƒ“
Late Cretaceous Santonian
ÌWŽÒ
Collector
‰¡ˆäŠˆé

Žû‘ ”Ô†FKYC42‚W

‰¡ˆäŠˆéƒRƒŒƒNƒVƒ‡ƒ“

ŽÊ^‚̃XƒP[ƒ‹ƒo[‚Í1cm; Scale bar =1 cm

ƒ_ƒƒVƒeƒX@ƒAƒCƒkƒAƒkƒX
Damesites ainuanus MATSUMOTO
ŽY’nEŽYo‘w™Ã
Occurrence
“Ï‘O’¬ŒÃ’O•Ê@‰ÚˆÎ‘wŒQ
Tomamae Town, Kotambetsu
Yezo Group,
Žž‘ã
Age
’†¶‘ã”’ˆŸ‹IŒãŠú@ƒTƒ“ƒgƒjƒAƒ“
Late Cretaceous Santonian
ÌWŽÒ
Collector
‰¡ˆäŠˆé
Žû‘ ”Ô†FKYC188

ŽÊ^‚̃XƒP[ƒ‹ƒo[‚Í1cm; Scale bar =1 cm

ƒnƒEƒGƒŠƒZƒ‰ƒX@ƒAƒ“ƒOƒXƒ^ƒ€
Hauericeras angustum Yabe
ŽY’nEŽYo‘w™Ã
Occurrence
’†ì’¬@‰ÚˆÎ‘wŒQ@ƒIƒ\ƒEƒVƒiƒC‘w
Nakagawa Town
Yezo Group, Osoushinai Formation
Žž‘ã
Age
’†¶‘ã”’ˆŸ‹IŒãŠú@ƒJƒ“ƒpƒjƒAƒ“
Late Cretaceous Campanian
ÌWŽÒ
Collector
‚‹´’B–í
Žû‘ ”Ô†FNMA00438

ŽÊ^‚̃XƒP[ƒ‹ƒo[‚Í1cm; Scale bar =1 cm

ƒzƒvƒŠƒeƒX@ƒfƒ“ƒ^ƒ^ƒX
Hoplites dentatus (Perssoptera & Linthia)
ŽY’nEŽYo‘w™Ã
Occurrence
ƒtƒ‰ƒ“ƒX
France
Žž‘ã
Age
’†¶‘ã”’ˆŸ‹IŒãŠú@ƒAƒ‹ƒrƒAƒ“
Late Cretaceous Albian
ÌWŽÒ
Collector
w“ü
Žû‘ ”Ô†FNMA00356

ŽÊ^‚̃XƒP[ƒ‹ƒo[‚Í1cm; Scale bar =1 cm

ƒLƒbƒ`ƒiƒCƒeƒX@ƒCƒVƒJƒƒC
Kitchinites isikawai (Jimbo)
ŽY’nEŽYo‘w™Ã
Occurrence
’†ì’¬@‰ÚˆÎ‘wŒQƒIƒ\ƒEƒVƒiƒC‘w
Nakagawa Town
Yezo Group, Osoushinai Formation
Žž‘ã
Age
’†¶‘ã”’ˆŸ‹IŒãŠú@ƒJƒ“ƒpƒjƒAƒ“
Late Cretaceous Campanian
ÌWŽÒ
Collector
Eˆõ
Žû‘ ”Ô†FNMA00044

ŽÊ^‚̃XƒP[ƒ‹ƒo[‚Í1cm; Scale bar =1 cm

ƒLƒbƒ`ƒiƒCƒeƒX@ƒWƒƒƒ|ƒjƒJƒX
Kitchinites japonicus Spath
ŽY’nEŽYo‘w™Ã
Occurrence
’†ì’¬@‰ÚˆÎ‘wŒQƒIƒ\ƒEƒVƒiƒC‘w
Nakagawa Town
Yezo Group, Osoushinai Formation
Žž‘ã
Age
’†¶‘ã”’ˆŸ‹IŒãŠú@ƒJƒ“ƒpƒjƒAƒ“
Late Cretaceous Campanian
ÌWŽÒ
Collector
Eˆõ
Žû‘ ”Ô†FNMA00202