Hikoroichi District Southern Kitakami Massif (Devonian of Japan)

Where: Iwate, Japan (39.1° N, 141.7° E: paleocoordinates 6.9° S, 111.0° E)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Nakazato Formation, Eifelian (393.3 - 387.7 Ma)

• bed-level stratigraphic resolution

Environment/lithology: marine; lithology not reported

Size classes: macrofossils, mesofossils

Primary reference: T. Kase and T. Nishida. 1986. A middle Devonian gastropod faunule from the Nakazato Formation of Kitakami, Northeast Japan. Bulletin of the National Science Museum, Tokyo, Series C 12(3):73-89 [P. Wagner/P. Wagner]more details

Purpose of describing collection: general faunal/floral analysis

PaleoDB collection 104031: authorized by Pete Wagner, entered by Hallie Street on 05.02.2011

Creative Commons license: CC BY (attribution)

Taxonomic list

Trilobita
 Corynexochida - Styginidae
 Proetida - Proetidae
Rhynchonellata
 Atrypida - Atrypidae
"Planatrypa japonica" = Atrypa (Planatrypa)
"Planatrypa japonica" = Atrypa (Planatrypa)
Bivalvia
 Modiomorphida - Modiomorphidae
? Modiomorpha sp. Hall and Whitfield 1869 clam
 Lucinida - Mactromyidae
? Paracyclas sp. Hall 1843 clam
Gastropoda
 Euomphalina - Omphalotrochidae
"Orecopia kobayashii n. sp." = Labrocuspis kobayashii, Fujispira japonica n. gen. n. sp.
"Orecopia kobayashii n. sp." = Labrocuspis kobayashii Kase and Nishida 1986 snail
Fujispira japonica n. gen. n. sp. Kase and Nishida 1986 snail
 Bellerophontida - Bellerophontidae
Bellerophon sp. de Montfort 1808 snail
Retispira sp. Knight 1945 snail
 Bellerophontida - Tropidodiscidae
Tropidodiscus (Tropidodiscus) nakazatensis n. sp. Kase and Nishida 1986 snail
 Murchisoniina - Gosseletinidae
"Euryzone onoi n. sp." = Bicarina onoi
"Euryzone onoi n. sp." = Bicarina onoi Kase and Nishida 1986 snail
 Murchisoniina - Murchisoniidae
Murchisonia sp., "Ulrichospira kanekoi n. sp." = Murchisonia kanekoi
Murchisonia sp. d'Archiac and de Verneuil 1841 snail
"Ulrichospira kanekoi n. sp." = Murchisonia kanekoi Kase and Nishida 1986 snail