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GCSE
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More cards in this set
Card 16
Front
ordovician graptolites name (Did)
Back
Card 17
Front
Ordovician first graptolite
Back
Card 18
Front
thecae are growing vertically upwards from the sicula
Back
Card 19
Front
thecae are added downwards from the sicula
Back
Card 20
Front
thecae are added on one side of the stipe
Back
Card 21
Front
thecae are added on two sides of the stipe
Back
Card 22
Front
thecae became more .......... through evolutionary time
Back
Card 23
Front
how did they feed?
Back
See full card set