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Loganograptus

LOGANOGRAPTUS
These were large graptolites: the rapid initial dichotomies near the sicula produced a colony with sixteen stipes. These stipes were evenly separated in life, but frequently bent in fossils. The thecae are simple tubes - about 1 per millimeter.

Habitat: This genus lived in deeper parts of the Ordovician ocean.

© 1992 Cyril Walker, David Ward .