Xiayan Formation
38 distinct taxa, from 50 fossil occurrences the Paleobiology Database records under this name, spanning 468–458 Mya.
GanSu, QingHai · CN
38 taxa · 50 fossils · 468–458 MyaLoading coastlines…
3 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
- Ampyx
- Birmanites
- Catazyga
- Cyclopyge
- Dicranograptus
- Discoceras
- Illaenus
- Lonchodomas
- Placoparina
- Remopleurides
- Tropidodiscus
- Vogdesia
- Amplexograptus
- Basilicus (Basiliella)
- Campylorthis
- Cardiograptus
- Chaulistomella
- Climacograptus
- Cryptograptus
- Cycloceras
- Cyclospira
- Didymelasma
- Didymograptus
- Geragnostus
- Glossograptus
- Isograptus
- Loganograptus
- Mysterioceras
- Obolus
- Orbiculoidea
- Paraglossograptus
- Parastrophina
- Petrocrania
- Pseudoclimacograptus
- Skenidioides
- Sowerbyella
- Telephina
- Tetragraptus
What else lived thenRank the rock of a period
Counts are of occurrence records, which measure the rock and the fieldwork together.