|Basic info||Taxonomic history||Classification||Relationships|
|Morphology||Ecology and taphonomy||Age range and collections|
Pterobranchia - Bireclinata - Retiolitidae
It was reranked as Diplograptus (Glyptograptus) by Elles and Wood (1907).
It was assigned to Diplograptus by Elles and Wood (1907); to Glyptograptinae by Mitchell (1987); to Graptoloidea by Sepkoski (2002); and to Petalolithinae by Melchin et al. (2011).
|C. E. Mitchell 1987||Species with glyptograptid to climacograptid thecae having relatively narrow geniculum and nearly straight supragenicular wall; proximal end generally narrow and fusiform, with strongly alternating thecae; generally septate with straight median septum and th21 or some later theca dicalycal, but may be aseptate; sicula simple, generally short and broad, lacking antivirgellar spines.|
|M. J. Melchin et al. 2011||The partial clade that includes the first
species that acquired a unistipular (aseptate) biserial rhabdosome
in the clade that contains Paramplexograptus madernii
and Retiolites geinitzianus and its descendants, but excluding
the taxa included in the Subfamily Retiolitinae.