Brachiopods and Bivalves

Question 1

What is this ?

Answer 1

Bivalve

Question 2

what is this ?

Answer 2

Brachiopod

Question 3

Symmetry of a Brachiopod

Answer 3

Symmetry is across the valve

Question 4

Symmetry of a Bivalve

Answer 4

Symmetry is between the valves

Question 5

Brachiopod morphology

Answer 5

Question 6

Where did Brachiopods live?

Answer 6

Exclusively marine

Question 7

Give an example of a Brachiopod that is bad for telling time period and why?

Answer 7

Lingula

They went to sleep for 4-5milliuon years and woke up offshore in recent times and has no changed much.

Question 8

Orthid, describe it, when it existed? what is it?

Answer 8

-Biconvex, ribbing, strophic hinge, mostly impunctate (no holes in the shell

-Late Cambrian - Early Permian

-Brachiopod

Question 9

Strophomenids, describe it, when it existed? what is it?

Answer 9

Concavoconvex, finely ribbed, strophic hinge, psedopunctate (look like it has holes in the shell but it does not)

-Late Ordovician to late Jurassic

-Brachiopod