|Basic info||Taxonomic history||Classification||Relationships|
|Morphology||Ecology and taphonomy||External Literature Search||Age range and collections|
Strophomenata - Billingsellida - Chaniellidae
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.
|J. Benedetto 2009||Delthyrium open limited by narrow lateral plates. Chilidial plates present. Pseudospondylium well developed in adult specimens. Ventral mantle canal system strongly impressed, with gonocoels enclosed anteriorly by lateral branches of vascula myaria and posterolaterally by arcuate projections of gonadal areas. Cardinal process ridgelike. Dorsal muscle field large, quadripartite. Dorsal mantle canal system pinnate.|