Pterobranchia - Graptoloidea - Dichograptidae
Parent taxon: Didymograptus according to M'Coy 1851
Sister taxa: Didymograptus (Didymograptellus), Didymograptus balticus, Didymograptus demissus, Didymograptus ensjoensis, Didymograptus euodus, Didymograptus extensus, Didymograptus filiformis, Didymograptus holmi, Didymograptus latus, Didymograptus murchisoni, Didymograptus nicholsoni, Didymograptus pacificus, Didymograptus paraindentus, Didymograptus paraindentus, Didymograptus protobalticus, Didymograptus pusillus, Didymograptus spinulosus, Didymograptus suecicus, Didymograptus turgidus, Didymograptus undulatus, Didymograptus uniformis
Subtaxa: Didymograptus (Didymograptus) artus
Ecology: passively mobile planktonic suspension feeder
Distribution:
• Whiterockian of United States (1: Utah collection)
• Ordovician of the Czech Republic (1), Portugal (1), Spain (3), United States (2: California, Nevada)
Total: 8 collections including 9 occurrences