Okubata, Omine Area (Triassic of Japan)

Also known as Okuhata

Where: Yamaguchi, Japan (34.2° N, 131.1° E: paleocoordinates 43.1° N, 114.8° E)

• coordinate estimated from map

• outcrop-level geographic resolution

When: Momonoki Formation, Carnian (237.0 - 228.0 Ma)

• from a single "bed"

• bed-level stratigraphic resolution

Environment/lithology: terrestrial; lithified, black shale

• apparently laterally equivalent to the "insect fossil bearing bed... composed of black shale" with "scarce plant fossils" found 2 km NE of the road cut

Size class: macrofossils

Preservation: adpression

Collection methods: Repository: Miné City Museum of History and Folklore

Primary reference: I. Fujiyama. 1991. Late Triassic insects from Miné, Yamaguchi, Japan, Part 1. Odonata. Bulletin of the National Science Museum, Tokyo, Series C 17(2):49-56 [J. Alroy/J. Alroy]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 106482: authorized by John Alroy, entered by John Alroy on 19.03.2011, edited by Jered Karr and Matthew Clapham

Creative Commons license: CC BY (attribution)

Taxonomic list

Insecta
 Dicondylia -
Coleoptera indet.1 Linnaeus 1758 beetle
MMHF3-00092
 Mecoptera - Worcestobiidae
"Orthophlebia haradai n. sp." = Worcestobia haradai2
"Orthophlebia haradai n. sp." = Worcestobia haradai2 Ueda 1991 scorpionfly
KMNH IP 000, 002
 Hymenoptera -
Xyeloidea indet.1 Newman 1834 sawfly
MMHF3-00095
 Hymenoptera - Xyelidae
Madygella humioi n. sp.1 Oyama and Maeda 2020 sawfly
MMHF3-00091
 Odonata - Cyclothemistidae
"Triassoneura okafujii n. sp." = Pseudotriassothemis okafujii, "Triassothemis minensis n. sp." = Pseudotriassothemis minensis, "Triassothemis nipponensis n. sp." = Pseudotriassothemis nipponensis
"Triassoneura okafujii n. sp." = Pseudotriassothemis okafujii Fujiyama 1991 dragonfly
MMHF3-0006
"Triassothemis minensis n. sp." = Pseudotriassothemis minensis Fujiyama 1991 dragonfly
MMHF3-0008 collected by Takayoshi Harada
"Triassothemis nipponensis n. sp." = Pseudotriassothemis nipponensis Fujiyama 1991 dragonfly
MMHF3-0007