Chedao Formation
46 distinct taxa, from 80 fossil occurrences the Paleobiology Database records under this name, spanning 461–450 Mya.
GanSu, Gansu · CN
46 taxa · 80 fossils · 461–450 MyaMembers recorded: Upper, Lower.
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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
- Nileus
- Illaenus
- Lonchodomas
- Michelinoceras
- Sinoceras
- Birmanites
- Bumastus
- Ceraurinus
- Cyclonema
- Dideroceras
- Geragnostus
- Hormotoma
- Ormoceras
- Orthoceras
- Ovalocephalus
- Pseudostygina
- Ptychopyge
- Richardsonoceras
- Shumardia
- Stenopareia
- Symphysurus
- Telephina
- Vaginoceras
- Arthrorhachis tarda
- Bronteopsis
- Bulbaspis
- Celmus
- Cyclopyge recurva
- Cyphoniscus socialis
- Dicellograptus sextans
- Discoceras
- Geragnostus (Novoagnostus) longicollis
- Glaphurina
- Lichas laciniatus
- Microparia (Quadratapyge) chedaoensis
- Ovalocephalus kanlingensis
- Ovalocephalus kelleri
- Paraphillipsinella
- Paratiresias turkestanicus
- Peraspis
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.