Name the life forms that existed during these geological periods?

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Name the life forms that existed during these geological periods?

Cambrian, Silurian, Devonian, Triassic, Jurrasic. Use a dictionary or encyclopedia as a reference.

2006-11-20 13:37:53 · 2 answers · asked by Anonymous in Science & Mathematics ➔ Earth Sciences & Geology

2 answers

Cambrian: trilobites

Silurian: boney fishes and sea scorpions early land plants

Devonian:sharks, ferns, first land animals, mites, early tetrapods (land fish/amphibians)

Triassic: Lizards, Dimetrodon, early dinosaurs, primitive mammals

Jurassic: Age of Dinosaurs Allosaurus, first birds

2006-11-21 11:18:58 · answer #1 · answered by aka DarthDad 5 · 0⤊ 0⤋

well there were lots of them... but blue green algae was in all of them

2006-11-20 14:26:30 · answer #2 · answered by d 3 · 0⤊ 0⤋