Fossil Characteristics

Question 1

Stromatolite

Answer 1

blue-green cyanobacteria form layered structure with sediment

Question 2

Diatoms

Answer 2

tests made of silica, producer, centric and pennate (forms diatomite)

Question 3

Radiolarians

Answer 3

tests made of silica, consumer, radial spine (forms chert)

Question 4

Coccolithophores

Answer 4

tests made of calcite, producer (forms chalk)

Question 5

Foraminifera

Answer 5

tests made of calcite, consumer (forms limestone)

Question 6

Fusilinids

Answer 6

megascopic form of foraminifera, external furrows

Question 7

Petrified Wood

Answer 7

silica replacement, might see rings or bark

Question 8

Leaves

Answer 8

often carbonized or imprints, might see veins

Question 8

Leaves

Answer 8

often carbonized or imprints, might see veins

Question 9

Sponges

Answer 9

Spicules (under microscope)

Question 10

Brachiopods

Answer 10

Still living, foramen, pedicle, pedicle valve, brachial valve

Question 11

Gastropods

Answer 11

Apex, whorl, aperture

Question 12

Bivalves

Answer 12

Valve

Question 13

Ammonites

Answer 13

Extinct, suture pattern, septa, chamber, siphuncle

Question 14

Bacculites

Answer 14

Extinct, suture pattern, septa, chamber, siphuncle

Question 15

Nautiloids

Answer 15

Still living, simple suture pattern, septa, chamber, siphuncle

Question 16

Trilobite

Answer 16

Cephalon, thorax, pygidium, three lobes

Question 17

Sea lillies

Answer 17

Stem, calyx

Question 18

Fish

Answer 18

vertebrae (backbone)

Question 19

Mammal

Answer 19

vertebrae (backbone)