Category:Extant Ordovician first appearances

Source: Wikipedia, the free encyclopedia.

This category includes

geologic time

, between 485.4 and 443.8 million years ago and have not yet gone extinct.

Subcategories

This category has only the following subcategory.

C

Chelicerates‎ (6 C, 2 P)

Pages in category "Extant Ordovician first appearances"

The following 26 pages are in this category, out of 26 total. This list may not reflect recent changes.

A

B

C

E

F

Flatworm

G

Gnathostomata

H

Horseshoe crab

M

N

O

Ostracod

P

Perischoechinoidea

R

Rhynchonellida

S

T

Teleostomi

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