Pterobranchia - Graptoloidea - Monograptidae
Full reference: C. E. Mitchell. 1987. Evolution and phylogenetic classification of the Diplograptacea. Palaeontology 30(2):353-405
Parent taxon: Monograptidae according to C. E. Mitchell 1987
See also Melchin et al. 2011 and Toro 1995
Sister taxa: Atavograptus, Campograptus, Coronograptus, Cucullograptus, Demirastrites, Diversograptus, Huttagraptus, Lituigraptus, Monoclimacis, Monograptus, Neomonograptus, Oktavites, Pernerograptus, Pribylograptus, Pristiograptinae, Pseudostreptograptus, Rastrites, Saetograptus, Spirograptus, Stimulograptus, Streptograptus, Testograptus
Subtaxa: Clinoclimacograptus Paraclimacograptus
Ecology: passively mobile planktonic suspension feeder
Distribution:
• Silurian of Argentina (2 collections), Canada (1: Nunavut), France (5), Ireland (1), the Russian Federation (2), Sweden (1), the United Kingdom (5), United States (3: Alaska), Uzbekistan (2)
• Ordovician of United States (3: Idaho)
Total: 25 collections including 27 occurrences