Cephalopoda - Goniatitida - Marathonitidae
Full reference: M. Ehiro and T. Ozawa. 2020. Early Asselian (earliest Permian) ammonoids from the Taishaku Limestone, Akiyoshi Belt, Southwest Japan: an Asselian ammonoid fauna of the Mid-Panthalassan Realm. Paleontological Research 24:298-315
Belongs to Almites according to M. Ehiro and T. Ozawa 2020
Sister taxa: Almites dmitrievi, Almites electraensis, Almites gracilis, Almites invariabilis, Almites leveni, Almites multisulcatus, Almites pavlovi, Almites pressulus, Almites reverendus, Almites sellardsi, Almites transitorius, Almites ventrosus
Type specimen: IGPS 112290, a shell. Its type locality is Southern part of Miharanoro, which is in an Asselian carbonate limestone in the Uyamanoro Formation of Japan.
Ecology: fast-moving nektonic carnivore
Average measurements (in mm): shell diameter 23.0
Distribution:
• Permian of Japan (2 collections)
Total: 2 collections each including a single occurrence
Specimen images are retrieved through the ePANDDA API.
Click image to enlarge. Click to access iDigBio record.