Fort Atkinson Limestone Formation
32 distinct taxa, from 41 fossil occurrences the Paleobiology Database records under this name, spanning 450 Mya.
Iowa, Illinois, Iowa, Illinois, Iowa, Wisconsin · US
32 taxa · 41 fossils · 450 MyaFiled under the Maquoketa Group.
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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
- Aechmina
- Endoceras
- Eridoconcha
- Euprimitia
- Kiesowia
- Leperditella
- Tetradella
- Americoncha
- Anaspyroceras
- Archaeocrinus
- Astrocystites
- Bollia
- Bothriocidaris
- Calceocrinus
- Carabocrinus
- Ceratopsis
- Cupulocrinus latibrachiatus
- Cyclocystoides
- Dendrocrinus
- Ectenocrinus
- Iocrinus
- Iowacystis sagittaria
- Laccoprimitia
- Plicodendrocrinus casei
- Porocrinus
- Protaxocrinus
- Quasibollia ridicula
- Schmidtella
- Schuchertoceras
- Sygcaulocrinus typus
- Trichinocrinus
- Zygobolboides
What else lived thenRank the rock of a period
Counts are of occurrence records, which measure the rock and the fieldwork together.