@

ŽÊ^‚̃XƒP[ƒ‹ƒo[‚Í1cm; Scale bar =1 cm

ƒ\[ƒEƒ“ƒiƒCƒeƒX@ƒAƒ‰ƒXƒJƒGƒ“ƒVƒX
Sounnaites alaskaensis Matsumoto
ŽY’nEŽYo‘w™Ã
Occurrence
–y‰Á“à’¬Žé‹f“à@‰ÚˆÎ‘wŒQ
Horokanai Town, Shumarinai
Yezo Group
Žž‘ã
Age
’†¶‘ã@”’ˆŸ‹IŒãŠú@ƒZƒmƒ}ƒjƒAƒ“
Late Cretaceous Cenomanian
ÌWŽÒ
Collector
‰¡ˆäŠˆé
Žû‘ ”Ô†FKYCH62

ŽÊ^‚̃XƒP[ƒ‹ƒo[‚Í1cm; Scale bar =1 cm

ƒRƒXƒ}ƒ`ƒZƒ‰ƒXiƒRƒXƒ}ƒ`ƒZƒ‰ƒXjƒWƒƒƒ|ƒjƒJƒ€
Kossmaticeras (Kossmaticeras) japonicum Matsumoto
ŽY’nEŽYo‘w™Ã
Occurrence
•½Žæ’¬@‰ÚˆÎ‘wŒQ
Biratori Town,
Yezo Group
Žž‘ã
Age
’†¶‘ã”’ˆŸ‹IŒãŠú
Late Cretaceous
ÌWŽÒ
Collector
ˆÉ“¤‘q³—²

Žû‘ ”Ô†FKYC833

‰¡ˆäŠˆéƒRƒŒƒNƒVƒ‡ƒ“

ŽÊ^‚̃XƒP[ƒ‹ƒo[‚Í1cm; Scale bar =1 cm

ƒRƒXƒ}ƒ`ƒZƒ‰ƒXiƒRƒXƒ}ƒ`ƒZƒ‰ƒXjƒ[ƒIƒoƒ‹ƒfƒBƒAƒiƒ€
Kossmaticeras (Kossmaticeras) theobaldianum(Stoliczka)
ŽY’nEŽYo‘w™Ã
Occurrence
“Ï‘O’¬CŒÃ’O•Ê@‰ÚˆÎ‘wŒQ
Tomamae Town, Kotambetsu
Yezo Group
Žž‘ã
Age
’†¶‘ã”’ˆŸ‹IŒãŠú
Late Cretaceous
ÌWŽÒ
Collector
‰¡ˆäŠˆé

Žû‘ ”Ô†FKYC302

‰¡ˆäŠˆéƒRƒŒƒNƒVƒ‡ƒ“

ŽÊ^‚̃XƒP[ƒ‹ƒo[‚Í1cm; Scale bar =1 cm

ƒˆƒRƒ„ƒ}ƒIƒZƒ‰ƒX@ƒ~ƒjƒ}ƒ€@‚ÉŽ—‚é
Yokoyamaoceras aff. minimum MATSUMOTO
ŽY’nEŽYo‘w™Ã
Occurrence
¬•½’¬’B•z@‰ÚˆÎ‘wŒQ
Obira Town, Tappu
Yezo Group
Žž‘ã
Age
’†¶‘ã”’ˆŸ‹IŒãŠú
Late Cretaceous
ÌWŽÒ
Collector
‰¡ˆäŠˆé
Žû‘ ”Ô†FKYC513

ŽÊ^‚̃XƒP[ƒ‹ƒo[‚Í1cm; Scale bar =1 cm

ƒˆƒRƒ„ƒ}ƒIƒZƒ‰ƒX@ƒWƒ“ƒ{ƒC
Yokoyamaoceras jimboi MATSUMOTO
ŽY’nEŽYo‘w™Ã
Occurrence
“Ï‘O’¬CŒÃ’O•Ê@‰ÚˆÎ‘wŒQ
Tomamae Town, Kotambetsu
Yezo Group
Žž‘ã
Age
’†¶‘ã”’ˆŸ‹IŒãŠú
Late Cretaceous
ÌWŽÒ
Collector
‰¡ˆäŠˆé
Žû‘ ”Ô†FKYC98

ŽÊ^‚̃XƒP[ƒ‹ƒo[‚Í1cm; Scale bar =1 cm

ƒˆƒRƒ„ƒ}ƒIƒZƒ‰ƒX@ƒRƒgƒC
Yokoyamaoceras kotoi MATSUMOTO
ŽY’nEŽYo‘w™Ã
Occurrence
“Ï‘O’¬CŒÃ’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†FKYCH33

ŽÊ^‚̃XƒP[ƒ‹ƒo[‚Í1cm; Scale bar =1 cm

ƒGƒIƒOƒ“ƒiƒŠƒeƒX@ƒyƒ“ƒ^ƒSƒkƒX
Eogunnarites pentagonus Matsumoto et Takahashi
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†FNMA00148

•¶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

ƒGƒIƒOƒ“ƒiƒŠƒeƒX@ƒ†ƒjƒJƒX
Eogunnarites unicus (Yabe)
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†FNMA00147

•¶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

ƒ}[ƒVƒƒƒ‰ƒCƒeƒX@ƒRƒ€ƒvƒŒƒbƒTƒ€
Marshallites compressum
ŽY’nEŽYo‘w™Ã
Occurrence
’†ì’¬ˆÀì@‰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
¼–ìFM

Žû‘ ”Ô†FNMA00177

•¶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

ƒ}[ƒVƒƒƒ‰ƒCƒeƒX@ƒIƒ‹ƒRƒXƒeƒtƒ@ƒmƒCƒfƒX
Marshallites olcostephanoides Matsumoto
ŽY’nEŽYo‘w™Ã
Occurrence
•s–¾
Žž‘ã
Age
’†¶‘ã”’ˆŸ‹IŒãŠú@
Late Cretaceous
ÌWŽÒ
Collector
‰¡ˆäŠˆé
Žû‘ ”Ô†FKYCH97

ŽÊ^‚̃XƒP[ƒ‹ƒo[‚Í1cm; Scale bar =1 cm

ƒ}[ƒVƒƒƒ‰ƒCƒeƒX@ƒJƒ€ƒVƒ…ƒƒGƒ“ƒVƒX
Marshallites cumshewaensis (Whiteaves)
ŽY’nEŽYo‘w™Ã
Occurrence
–y‰Á“à’¬Žé‹f“à@‰ÚˆÎ‘wŒQ
Horokanai Town, Shumarinai
Yezo Group
Žž‘ã
Age
’†¶‘ã”’ˆŸ‹IŒãŠú@ƒZƒmƒ}ƒjƒAƒ“
Late Cretaceous Cenomanian
ÌWŽÒ
Collector
‰¡ˆäŠˆé
Žû‘ ”Ô†FKYC746

ŽÊ^‚̃XƒP[ƒ‹ƒo[‚Í1cm; Scale bar =1 cm

ƒ~ƒJƒTƒCƒeƒX@ƒIƒ‹ƒrƒLƒ…ƒ‰ƒŠƒX
Mikasaites orbicularis Matsumoto
ŽY’nEŽYo‘w™Ã
Occurrence
’†ì’¬ˆÀì@‰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†FNMA00016