Cape Tatezaki, Utatsu, Minamisanriku Town, Miyagi Prefecture (Triassic of Japan)

Where: Japan (38.7° N, 141.5° E: paleocoordinates 38.4° N, 118.8° E)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Columbites parisianus ammonoid zone, Osawa Formation, Spathian (251.3 - 247.2 Ma)

• Middle part of Osawa Fm

• group of beds-level stratigraphic resolution

Environment/lithology: marine; lithified siliciclastic sediments

Size class: macrofossils

Preservation: mold/impression

Collection methods: Repository: Tohoku University Museum (Institute of Geology and Paleontology, Tohoku University: IGPS) and in the Utatsu Ichthyosaur Museum (Educational Committee of Minamisanriku Town: UIM)

Primary reference: M. Ehiro, O. Sasaki, H. Kano, J. Nemoto, and H. Kato. 2015. Thylacocephala (Arthropoda) from the Lower Triassic of the South Kitakami Belt, northeast Japan. Paleontological Research 19:269-282 [M. Clapham/M. Clapham]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 173664: authorized by Matthew Clapham, entered by Matthew Clapham on 07.10.2015

Creative Commons license: CC BY (attribution)

Taxonomic list

Cephalopoda
 Ceratitida - Proptychitidae
Pseudokymatites tabulatus n. sp. Ehiro et al. 2016 ceratite
 Ceratitida - Albanitidae
Albanites sheldoni Kummel 1969 ceratite
 Ceratitida - Hemilecanitidae
Hemilecanites discus Arthaber 1908 ceratite
 Ceratitida - Columbitidae
Subcolumbites sp. Spath 1930 ceratite
Columbites parisianus Hyatt and Smith 1905 ceratite
Tardicolumbites tardicolumbus Guex et al. 2005 ceratite
Yvesgalleticeras sp. Guex et al. 2005 ceratite
 Ceratitida - Khvalynitidae
Metadagnoceras sp. Tozer 1965 ceratite
 Ceratitida - Hellenitidae
Hellenites elegans Guex et al. 2005 ceratite
 Ceratitida - Procarnitidae
Procarnites sp. Arthaber 1911 ceratite
 Ceratitida - Hedenstroemiidae
? Pseudosageceras sp. Diener 1895 ceratite
 Phylloceratida - Nordophiceratidae
Nordophiceratoides bartolinae Guex et al. 2010 ammonite
 Phylloceratida - Palaeophyllitidae
? Leiophyllites sp. Diener 1915 ammonite
Leiophyllites wakoi n. sp. Ehiro et al. 2016 ammonite
Thylacocephala
 Conchyliocarida - Ostenocarididae
Ostenocaris sp. Arduini et al. 1984
  -
Ankitokazocaris bandoi n. sp., "Kitakamicaris utatsuensis n. gen. n. sp." = Ankitokazocaris utatsuensis
Ankitokazocaris bandoi n. sp. Ehiro and Kato 2015
"Kitakamicaris utatsuensis n. gen. n. sp." = Ankitokazocaris utatsuensis Ehiro and Kato 2015