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ŽÊ�^‚̃XƒP�[ƒ‹ƒo�[‚Í1cm; Scale bar =1 cm

ƒKƒrƒIƒZƒ‰ƒX�@ƒGƒ]ƒGƒ“ƒ[
Gabbioceras yezoense Shigeta
ŽY’n�EŽY�o‘w™Ã
Occurrence
’†�ì’¬�@‰ÚˆÎ‘wŒQ�@�²‹v�ì‘w
Nakagawa Town
Yezo Group, Sakugawa Formation
Žž‘ã
Age
’†�¶‘ã”’ˆŸ‹IŒãŠú�@ƒZƒmƒ}ƒjƒAƒ“
Late Cretaceous Cenomanian
�Ì�WŽÒ
Collector
‘��ì�_Ži

Žû‘ ”Ô�†�FNMA00132

•¶Œ£�G‘��ì�E�¼–ì�i1999�j–kŠC“¹’†�ì’nˆæ‚̃Zƒmƒ}ƒjƒAƒ“ŠKƒAƒ“ƒ‚ƒiƒCƒgŒQ�W�D’†�ì’¬‹½“yŽ‘—¿ŠÙ‹I—v�uŽ©‘RŽ�‚ÌŒ¤‹†�v‘æ‚Q�†�C1-40�D

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ƒKƒrƒIƒZƒ‰ƒX�@ƒ~ƒJƒTƒGƒ“ƒ[
Gabbioceras mikasaense Shigeta
ŽY’n�EŽY�o‘w™Ã
Occurrence
’†�ì’¬�@‰ÚˆÎ‘wŒQ�@�²‹v�ì‘w
Nakagawa Town
Yezo Group, Sakugawa Formation
Žž‘ã
Age
’†�¶‘ã”’ˆŸ‹IŒãŠú�@ƒZƒmƒ}ƒjƒAƒ“
Late Cretaceous Cenomanian
�Ì�WŽÒ
Collector
�¼–ì�F�M

Žû‘ ”Ô�†�FNMA00134

•¶Œ£�G‘��ì�E�¼–ì�i1999�j–kŠC“¹’†�ì’nˆæ‚̃Zƒmƒ}ƒjƒAƒ“ŠKƒAƒ“ƒ‚ƒiƒCƒgŒQ�W�D’†�ì’¬‹½“yŽ‘—¿ŠÙ‹I—v�uŽ©‘RŽ�‚ÌŒ¤‹†�v‘æ‚Q�†�C1-40�D

ŽÊ�^‚̃XƒP�[ƒ‹ƒo�[‚Í1cm; Scale bar =1 cm

ƒeƒgƒ‰ƒSƒjƒeƒX�iƒeƒgƒ‰ƒSƒjƒeƒX�jƒOƒ‰ƒuƒ‹ƒX
Tetragonites (Tetragonites) glabrus (Jimbo)
ŽY’n�EŽY�o‘w™Ã
Occurrence
�¬•½’¬�@‰ÚˆÎ‘wŒQ
Obira Town
Yezo Group,
Žž‘ã
Age
’†�¶‘ã”’ˆŸ‹IŒãŠú�@ƒ`ƒ…�[ƒ�ƒjƒAƒ“
Late Cretaceous Turonian
�Ì�WŽÒ
Collector
•l–{�@–¾
Žû‘ ”Ô�†�FNMA00450

ŽÊ�^‚̃XƒP�[ƒ‹ƒo�[‚Í1cm; Scale bar =1 cm

ƒeƒgƒ‰ƒSƒjƒeƒX�iƒeƒgƒ‰ƒSƒjƒeƒX�jƒ~ƒjƒ€ƒX
Tetragonites (Tetragonites) minimus Shigeta
ŽY’n�EŽY�o‘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
�Ì�WŽÒ
Collector
�Eˆõ
Žû‘ ”Ô�†�FNMA00274

ŽÊ�^‚̃XƒP�[ƒ‹ƒo�[‚Í1cm; Scale bar =1 cm

ƒeƒgƒ‰ƒSƒjƒeƒX�iƒeƒgƒ‰ƒSƒjƒeƒX�jƒ|ƒyƒeƒ“ƒVƒX
Tetragonites (Tetragonites) popetensis (YABE)
ŽY’n�EŽY�o‘w™Ã
Occurrence
’†�ì’¬�²‹v�@‰ÚˆÎ‘wŒQ
Nakagawa Town, Saku
Yezo Group,
Žž‘ã
Age
’†�¶‘ã”’ˆŸ‹IŒãŠú
Late Cretaceous
�Ì�WŽÒ
Collector
‰¡ˆäŠˆ�é
Žû‘ ”Ô�†�FKYC614

ŽÊ�^‚̃XƒP�[ƒ‹ƒo�[‚Í1cm; Scale bar =1 cm

ƒeƒgƒ‰ƒSƒjƒeƒX�iƒeƒgƒ‰ƒSƒjƒeƒX�jƒGƒsƒSƒkƒX
Tetragonites (Tetragonites) epigonus (KOSSMAT)
ŽY’n�EŽY�o‘w™Ã
Occurrence
“Ï‘O’¬ŒÃ’O•Ê�@‰ÚˆÎ‘wŒQ
Tomamae Town, Kotambetsu
Yezo Group,
Žž‘ã
Age
’†�¶‘ã”’ˆŸ‹IŒãŠú�@
Late Cretaceous
�Ì�WŽÒ
Collector
‰¡ˆäŠˆ�é
Žû‘ ”Ô�†�FKYC289

ŽÊ�^‚̃XƒP�[ƒ‹ƒo�[‚Í1cm; Scale bar =1 cm

ƒTƒnƒŠƒjƒeƒX�@ƒeƒVƒIƒGƒ“ƒVƒX
Saghalinites teshioensis Matsumoto
ŽY’n�EŽY�o‘w™Ã
Occurrence
’†�ì’¬�@ˆÀ�ì‘w
Nakagawa Town
Yasukawa Formation
Žž‘ã
Age
’†�¶‘ã”’ˆŸ‹IŒãŠú�@ƒJƒ“ƒpƒjƒAƒ“
Late Cretaceous Campanian
�Ì�WŽÒ
Collector
ˆÉ’ë–õ�O
Žû‘ ”Ô�†�FNMA00410