†family Tetragraptidae Frech 1897 (graptolite)
Pterobranchia - Graptoloidea - Tetragraptidae
Parent taxon: Dichograptina according to J. Maletz 2014
Sister taxa: Dichograptidae, Phyllograptidae, Pterograptidae
Subtaxa: Pseudotrigonograptus
Ecology: passively mobile planktonic suspension feeder
Distribution:
• Yapeenian of New Zealand (2 collections)
• Ningkuo of China (2)
• Arenig of China (3), the United Kingdom (1)
• Ordovician of Bolivia (1), China (7), the Russian Federation (10)
Total: 26 collections including 30 occurrences