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Flashcards in Trilobites Deck (14)
0

In what times did the trilobites live?

Lower Cambrian to Upper Permian

1

Describe Agnostida...

• 2-3 segments
• No spines
• No eyes
• Tiny!

2

Which order of trilobite is fairly spiny and has 22 thoracic segments?

Redlichiida

3

Describe Ptychoperiida...

• 6 segments
• Massive genial spines

4

Which trilobite has 12-13 segments and small eyes?

Phacopida

5

Which trilobite has 11 segments and a flat glabella?

Phacopina

6

Describe the trilobite order Odontopleurida...

Insanely spiny!

7

Name 5 parts of the trilobite anatomy

• Facial suture
• Cephalon
• Glabella
• Pygidium
• Thorax

8

When did Agnostida live?

Lower Cambrian-Upper Ordovician

9

When did Redlichiida live?

Lower Cambrian-Mid Cambrian

10

When did Ptychoperiida live?

Lower Cambrian-Upper Devonian

11

When did Phacopida live?

Lower Ordovician-Mid Devonian

12

When did Phacopina live?

Lower Ordovician-Upper Devonian

13

When did Odontopleurida live?

Upper Cambrian-Mid Devonian