Brainard Formation
32 distinct taxa, from 36 fossil occurrences the Paleobiology Database records under this name, spanning 458–443 Mya.
Iowa, Iowa, Illinois · US
32 taxa · 36 fossils · 458–443 MyaFiled under the Maquoketa Group.
Macrostrat places this rock in the Maquoketa Group, and dates it 448–446 Ma. Macrostrat’s own record
Loading 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
- Ctenodonta
- Dendrocrinus
- Palaeoneilo fecunda
- Anartiocystis
- Arisaigia
- Beloitoceras
- Bivalvia
- Brachiopoda
- Bryozoa
- Bucanopsis
- Compsocrinus
- Cornulites
- Cupulocrinus
- Cyrtolites
- Diamphidiocystis
- Enoploura balanoides
- Glyptorthis
- Hebertella prestonensis
- Helicelasma randi
- Hindia
- Isorthoceras
- Liospira
- Lophospiridae
- Murchisonia
- Nuculites neglectus
- Orbiculoidea
- Plaesiomys bellistriatus
- Plaesiomys occidentalis
- Plicodendrocrinus casei
- Pyrgocystis
- Trichinocrinus
- Zygospira resupinata
What else lived thenRank the rock of a period
Counts are of occurrence records, which measure the rock and the fieldwork together.