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Country:
United States of America
Phylum:
Hemichordata
FHSM IP-1531
Graptolithina (Bronn, 1849)
Formation:
Rogers Gap
Period(Early):
Ordovician
FHSM IP-2182
Dendrograptus
(Hall, 1858)
Formation:
St. Lawrence
Period(Early):
Cambrian
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