|Basic info||Taxonomic history||Classification||Relationships|
|Morphology||Ecology and taphonomy||External Literature Search||Age range and collections|
Pterobranchia - Bireclinata - Retiolitidae
If no rank is listed, the taxon is considered an unranked clade in modern classifications. Ranks may be repeated or presented in the wrong order because authors working on different parts of the classification may disagree about how to rank taxa.
|M. J. Melchin et al. 2011||The first species that acquired a unistipular (aseptate)
biserial rhabdosome in the clade that contains Paramplexograptus
madernii and Retiolites geinitzianus and all its
descendants (Node 4, Figs 2 & 3).