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Geology F795 > Ranges > Flashcards

Flashcards in Ranges Deck (17):
1

Rugose

Ordovician-Permian

2

Tabulate

Ordovician-Permian

3

Trilobites

Cambrian-Permian

4

Sclerectinian

Triassic-Present

5

Brachipods

Cambrian-Present

6

Bivalves

Cambrian-Present

7

Crinoids

Ordivician-Present

8

Graptolites

Silurian to early Devonian (very rare by Dev)

9

Belemnites

Jurassic-End Cretaceous

10

Conodonts

Precambrian-Permian

11

Forminfera

Cambrian-Present

12

Nautiloids

Cambrian-Present

13

Ammonoids

Goniatites: Ordovician-Permian
Ceratites:Triassic-Jurassic
Ammonoids: Jurassic-End Cretaceous

14

Ostracods

Cambrian-Present

15

Radiolaria

Cambrian-Present

16

Echinoids

Cambrian-Present
Irregular from Triassic

17

Dinosaurs

End Permian-end Cretaceous