Fossils Flashcards

(53 cards)

1
Q

Is a Brachiopod Equivalve or Inequivalve

A

Inequivalve

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2
Q

Is a Brachiopod Equilateral

A

Yes

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3
Q

Is a Brachiopod Inequilateral

A

No

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4
Q

Are Brachiopods marine?

A

Yes - exclusively

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5
Q

What type of feeder is a brachiopod

A

Benthic sessile and attached to seafloor

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6
Q

When did Brachiopods live?

A

Ord - Recent

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7
Q

When were Brachiopods most abundant

A

Palaezoic

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8
Q

What are both valves of Brachiopod called

A

Pedicle and Brachial Valve

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9
Q

Are Bivalves equivalve or inequivalve

A

Equivalve

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10
Q

When did bivalves live

A

Cambrian to Recent

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11
Q

What type of feeder was a bivalve

A

Suspension filter feeder

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12
Q

Are bivalves molluscs?

A

Yes

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13
Q

Can some bivalves be equilateral?

A

Yes

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14
Q

Name species of Bivalve which can swim

A

Pecten

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15
Q

Name sessile bivalve notably found in cretaceous

A

Rudists (form reefs)

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16
Q

Name the main fauna you would find in a tropical lagoon.

A

Sea grass, Finger Corals, Sea fans, Brain Coral

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17
Q

Which came first, Triassic or Permian?

A

Permian

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18
Q

When did tabulate corals live?

A

Early Ordivician - Permian (abundant in Silurian)

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19
Q

What is the difference between Tabulate and Rugose Corals?

A

Tabulate are colonial - Rugose are mostly solitary

Tabulate have tabulae - Rugose have septa and deseppiments.

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20
Q

When did Rugose Corals live?

A

Middle Ord - Permian

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21
Q

When did Scleratinian Corals live?

A

Triassic - Recent

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22
Q

Are Scleractinian Corals made of aragonite or calcite?

23
Q

Are Scleractinian Corals colonial or solitary?

24
Q

What part of the sponge does the water exit?

25
What part of the sponge does water enter?
Ostium
26
What are Rudists?
Bivalves which formed reef-like structures and lived in shallow marine during the Cretaceous
27
Ring-like fossil?
Archaeocythanids - lived in Cambrian
28
How would you identify a Crinoid?
Polo-mint like stems
29
What are crinoids
Form of echinoderm - Been around since Ordivician
30
Where do crinoids live?
Ancient fossils lived in shallow marine and modern day species are more deep marine. Mostly filter feeders on sea floor but some are planktonic and float in water column.
31
What was significant about the Silurian?
First terrestrial plants
32
Name the fauna/biota found in Silurian.
Cooksonia, Aglalophyton, Rhynia from Rhynie Chert, Monograptus, T and R corals most abundant here
33
When did plants start to produce wood?
Middle Devonian
34
When did roots start to get deeper?
Late Devonian
35
What was found in the carboniferous
Coal, Stigmaria, Calamites, Lepedodendron,
36
When did grasses form and why were they important?
Cretaceous - food source for mammals
37
What is a cephalopod
A type of mollusc
38
When did cephalopods live
Late Camb - Recent
39
What are bullet shaped fossils?
Belemites
40
When did belemnites live?
Ord - Cret (most common in Jurr and Cret)
41
Were belemites internal or externally shelled?
Internally
42
What are the chambers called in cephalopods?
Camera (Ar gas flows in and out to move)
43
When did nautiloid live?
Cambrian - Recent
44
When did goniatite live?
Devonian - Permian
45
When did Ceratites live?
Late Permian - Triassic
46
When did Ammonites live?
Jurassic and Cretaceous
47
Are Trilobites exclusively marine?
Yes
48
When were Trilobites most abundant?
Lower Palaeozoic or Cambrian
49
What is the head of a trilobite called?
Cephalon
50
When did Trilobites go extinct?
Late Permian
51
Were Trilobites benthic or pelagic?
Benthic burrowers, plough, some could swim
52
Where did Trilobites live?
Continental Seafloor (plenty of food)
53
What is so important about Proetids
Survived Devonian and last order to survive till Late Permian