Maquoketa Formation
154 distinct taxa, from 291 fossil occurrences the Paleobiology Database records under this name, spanning 451–446 Mya.
Minnesota, Iowa, Illinois, Minnesota, Iowa, Wisconsin, Illinois · US
154 taxa · 291 fossils · 451–446 MyaFiled under the Maquoketa Group. Members recorded: Elgin, Clermont, Brainard, basal.
Macrostrat dates this rock 450–448 Ma. Macrostrat’s own record
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16 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
- Endoceras
- Anaspyroceras
- Kionoceras
- Nuculites
- Zygobolboides
- Beloitoceras
- Ctenobolbina
- Ephippiorthoceras
- Orthodesma
- Palaeoneilo
- Ambonychia
- Apycnodiscus
- Armenoceras
- Crinoidea
- Cyrtodonta
- Cyrtodontula
- Hindia sphaeroidalis
- Isorthoceras sociale
- Lepidocyclus
- Liospira
- Liospira micula
- Modiolopsis
- Ostracoda
- Phialaspongia fossa
- Plicodendrocrinus casei
- Porocrinus
- Primitiella
- Similodonta
- Trilobita
- Ambonychiopsis
- Americoncha
- Archinacella deleta
- Bairdiocypridella
- Bollia
- Bryozoa
- Bythocypris
- Calceocrinus
- Carabocrinus
- Charactoceras
- Cornulites
The 40 most often recorded, of 154.
What else lived thenRank the rock of a period
Counts are of occurrence records, which measure the rock and the fieldwork together.