9B

Question 1

Brachiopods

Answer 1

TS - Paleozoic (start of Ordovician to Permian mostly)
- Early Cambrian to now
H - shallow marine

Question 2

Bryozoans

Answer 2

TS- Late Cambrian to now

H - all depths (mostly shallow)

Question 3

Cephalopods

Answer 3

Late Cambrian to now
TS: Nautiloids - Paleozoic
Ammonoids - Mesozoic
Geographically wide range

Question 4

Corals

Answer 4

Early Cambrian to now

H - Paleozoic corals found in limestone and mudstone

Question 5

Crinoids

Answer 5

TS - early Ordovician to now (abundant in Paleozoic)

H - most live below 100m

Question 6

Gastropods

Answer 6

TS - early Cambrian to now

H - wide range of adaptation

Question 7

Graptolites

Answer 7

TS- middle Cambrian to early Mississippian (Ordovician and Silurian)
H - deep water shales, not shallow marine rocks

Question 8

Pelecypods

Answer 8

TS - early Ordovician to now (Mesozoic and Cenozoic)

H - bottom dwellers in marine or fresh water (also intertidal zones)

Question 9

Trilobites

Answer 9

TS - Early Cambrian to Permian (Cambrian > Ordovician)