Fort Randall Formation
65 distinct taxa, from 76 fossil occurrences the Paleobiology Database records under this name, spanning 16–13 Mya.
South Dakota, Nebraska · US
65 taxa · 76 fossils · 16–13 MyaFiled under the Ogallala Group. Members recorded: "rock rose" zone.
Macrostrat dates this rock 23–5.3 Ma. Macrostrat’s own record
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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
- Megasminthus tiheni
- Ambystoma minshalli
- Charina prebottae
- Crocodylia
- Hyla
- Ictaluridae
- Monosaulax
- Mylagaulidae
- Rhinocerotidae
- Schaubeumys
- Accipitridae
- Adeloblarina berklandi
- Ameiseophis robinsoni
- Antilocapridae
- Archaeohippus
- Camelidae
- Chondrichthyes
- Copemys
- Copemys longidens
- Cormohipparion quinni
- Cupidinimus smaragdinus
- Dakotaophis greeni
- Elaphe nebraskensis
- Equidae
- Eucastor
- Eumeces
- Globidonta
- Gomphotherium
- Heteromyidae
- Hypolagus vetus
- Insectivora
- Lampropeltis similis
- Leptarctus primus
- Lignimus austridakotensis
- Limnoecus niobrarensis
- Macrognathomys gemmacolis
- Marmotini
- Merychippus
- Merychippus insignis
- Merycodus necatus
The 40 most often recorded, of 65.
What else lived thenRank the rock of a period
Counts are of occurrence records, which measure the rock and the fieldwork together.