Pterobranchia - Graptoloidea - Dichograptidae
Alternative combination: Expansograptus holmi
Belongs to Didymograptus according to Törnquist 1901
Sister taxa: Didymograptus (Didymograptellus), Didymograptus (Didymograptus), Didymograptus balticus, Didymograptus demissus, Didymograptus ensjoensis, Didymograptus euodus, Didymograptus extensus, Didymograptus filiformis, 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
Ecology: passively mobile planktonic suspension feeder
Distribution:
• Ordovician of Argentina (2 collections)
• Arenig of Canada (1: Yukon)
• Arenigian of Argentina (1)
Total: 4 collections each including a single occurrence
Specimen images are retrieved through the ePANDDA API.
Click image to enlarge. Click to access iDigBio record.