Soma (Jurassic of Japan)

Also known as PGAP 338

Where: Fukushima, Japan (37.7° N, 140.9° E: paleocoordinates 45.2° N, 144.1° E)

• coordinate estimated from map

When: Tochikubo Formation, Late/Upper Jurassic (163.5 - 145.0 Ma)

Environment/lithology:

Size class: macrofossils

Primary reference: T. Kimura. 1987. Recent knowledge of Jurassic and Early Cretaceous Floras in Japan and Phytogeography of this Time in East Asia. Bulletin of Tokyo Gakugei University Section IV 39:87-115 [A. Rees/A. Rees]more details

Purpose of describing collection: biostratigraphic analysis

PaleoDB collection 30206: authorized by Allister Rees, entered by Allister Rees on 02.04.2003

Creative Commons license: CC BY (attribution)

Taxonomic list

• Genus-level assignments and numbers of species are from the PGAP database. Species names are in the process of being entered.
unclassified
  -
Equisetopsida
 Pinidae - Pinidae
Frenelopsis "sp. 1" Schenk 1869
Sphenopteridae
  - Sphenopteridae
Sphenopteris "sp. 1" Sternberg 1825
Eboracia
  -
Eboracia "sp. 1" Thomas 1911
Polypodiopsida
  - Gleicheniaceae
Gleichenites "sp. 1" Göppert 1836
Gleichenites "sp. 2" Göppert 1836
Gleichenites "sp. 3" Göppert 1836
  -
Cladophlebis "sp. 1" Brongniart 1849
Cladophlebis "sp. 2" Brongniart 1849
Cladophlebis "sp. 3" Brongniart 1849
Cladophlebis "sp. 4" Brongniart 1849
Cladophlebis "sp. 5" Brongniart 1849
Cladophlebis "sp. 6" Brongniart 1849
 Gleicheniales - Polypodiidae
Matonidium "sp. 1" Schenk 1871
 Schizaeales - Polypodiidae
Cycadopsida
 Cycadales - Nilssoniaceae
Pseudoctenis "sp. 1" Seward 1911 cycads
 Cycadales -
"Nilssonia "sp. 1"" = Nilsonia, "Nilssonia "sp. 2"" = Nilsonia, "Nilssonia "sp. 3"" = Nilsonia
"Nilssonia "sp. 1"" = Nilsonia Brongniart 1825 cycads
"Nilssonia "sp. 2"" = Nilsonia Brongniart 1825 cycads
"Nilssonia "sp. 3"" = Nilsonia Brongniart 1825 cycads
 Coniferales - Podocarpaceae
Elatocladus "sp. 1" Halle 1913 podocarp
Elatocladus "sp. 2" Halle 1913 podocarp
 Bennettitales -
Zamites "sp. 1" Brongniart 1828
Otozamites "sp. 1" Braun 1843
Ptilophyllum "sp. 1" Morris 1840
Ptilophyllum "sp. 2" Morris 1840
Ptilophyllum "sp. 3" Morris 1840
Ptilophyllum "sp. 4" Morris 1840
Pinopsida
 Pinales - Taxaceae
Nageiopsis "sp. 1" Fontaine 1889 yew
Nageiopsis "sp. 2" Fontaine 1889 yew
Torreya "sp. 1" Arnott 1838 yew