|Basic info||Taxonomic history||Classification||Relationships|
|Morphology||Ecology and taphonomy||External Literature Search||Age range and collections|
Xiphosura - Sessilia - Scalpellidae
It was reranked as Lithostrotion (Diphyphyllum) by Easton (1960).
It was assigned to Lithostrotionidae by Hill (1956); to Lithostrotion by Easton (1960); to Diphyphyllinae by Hill (1981); and to Rugosa by Sepkoski (2002).
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.