Gur'yanovka Formation
46 distinct taxa, from 82 fossil occurrences the Paleobiology Database records under this name, spanning 458–445 Mya.
Siberia · RU
46 taxa · 82 fossils · 458–445 MyaLoading coastlines…
4 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
- Chaulistomella
- Aphelognathus
- Boreadorthis
- Phragmodus undatus
- Eridorthis
- Nyctopora
- Rostricellula
- Severginella altaica
- Triplesia
- Austinella
- Ceraurinus icarus
- Eoanastrophia
- Panderodus gracilis
- Scandodus
- Severginaria salairica
- Sibiriolites
- Anoptambonites grayae
- Apatomorpha altaica
- Belodina compressa
- Brachyelasma altaica
- Bumastus
- Calapoecia
- Calapoecia coxi
- Chaetetes
- Cyrtophyllum
- Dactylogonia
- Drepanoistodus
- Drepanoistodus suberectus
- Eofletcheria
- Eorobergia
- Erraticodon
- Eurychilina
- Fascifera
- Glyptomena
- Glyptorthis balclatchiensis
- Grammolomatella
- Heliolites
- Illaenus
- Isotelus
- Onniella flava
The 40 most often recorded, of 46.
What else lived thenRank the rock of a period
Counts are of occurrence records, which measure the rock and the fieldwork together.