Hiraiga Formation
134 distinct taxa, from 408 fossil occurrences the Paleobiology Database records under this name, spanning 121–110 Mya.
Iwate · JP
134 taxa · 408 fossils · 121–110 MyaFiled under the Miyako Group.
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6 distinct localities, where the rock is now rather than where it was laid down. Tectonics draws the world it belonged to.
When
What has been found
- Pterotrigonia
- Nagaoella
- Astarte
- Glycymeris (Hanaia)
- Semisolarium
- Tylostoma
- Astarte minor
- Astarte (Leckhamptonia)
- Amauropsis
- Anthonya
- Crinoidea
- Eriptycha
- Isocrinus (Chladocrinus)
- Otostoma
- Turritella (Torquesia)
- Ataphrus
- Hanaispira
- Trajanella
- Cirsocerithium
- Cucullaea (Idonearca)
- Mesosaccella
- Neritopsis
- Pseudomelania
- Scurriopsis
- Anthozoa
- Cimolithium miyakoense
- Eriphyla (Miyakoella)
- Gyrodes
- Nipponitrigonia kikuchiana
- Nododelphinula
- Ostreida
- Pterotrigonia (Pterotrigonia)
- Trypanotrochus
- Afrollonia
- Chilodonta
- Drepanochilus
- Eburneopecten
- Goniomya
- Hanaibursa
- Neithea ficalhoi
The 40 most often recorded, of 134.
What else lived thenRank the rock of a period
Counts are of occurrence records, which measure the rock and the fieldwork together.