Pterobranchia - Graptoloidea - Glossograptidae
Alternative combinations: Cryptograptus tricornis schaeferi, Cryptograptus tricornis schaferi
Full reference: C. Lapworth. 1880. XIV. — On new British Graptolites. Annals and Magazine of Natural History: Series 5 5(26):149-177
Belongs to Cryptograptus according to B. Toro et al. 2024
See also Skwarko 1962
Sister taxa: Cryptograptus antennarius, Cryptograptus tricornis
Ecology: facultatively mobile planktonic suspension feeder
Distribution:
• Whiterockian of Canada (2: Newfoundland and Labrador collections)
• Ordovician of Bolivia (1), New Zealand (9), the United Kingdom (1), United States (1: Alaska)
Total: 14 collections each including a single occurrence
Specimen images are retrieved through the ePANDDA API.
Click image to enlarge. Click to access iDigBio record.