Term
Cephalopods
Developed during late Cambrian
Dominant in Ordovician
Phylum: Mollusca |
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Definition
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Term
Solitary Corals
Developed during Devonian
Dominant in Ordovician
Phylum: Cnidaria
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Definition
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Term
Petoskey Stones
Developed during Devonian
Dominant in Devonian
Phylum: Cnidaria |
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Definition
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Term
Favosites
Developed during Ordovician
Dominant in Silurian/Devonian
Phylum: Cnidaria |
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Definition
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Term
Stigmaria
Developed during Pennsylvanian
Dominant in Pennsylvanian
Phylum: Gymnospermae |
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Definition
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Term
Pelecypods
Developed during Cambrian
Dominant in Cambrian
Phylum: Mollusca |
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Definition
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Term
Platystrophia
Developed during late Ordovician
Dominant in Permian
Phylum: Mollusca |
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Definition
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Term
Mucrospirifer
Developed during Devonian
Dominant in Permian
Phylum: Mollusca |
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Definition
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Term
Atrypa
Developed during Silurian
Dominant in Cambrian
Phylum: Mollusca |
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Definition
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Term
Trilobites
Developed during Cambrian
Dominant in Cambrian
Phylum: Arthropoda |
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Definition
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Term
Gastropods
Developed during Cambrian
Dominant in Ordovician
Phylum: Mollusca |
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Definition
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Term
Crinoids
Developed during Cambrian
Dominant in Ordovician
Phylum: Echinoderma |
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Definition
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