|Basic info||Taxonomic history||Classification||Relationships|
|Morphology||Ecology and taphonomy||External Literature Search||Age range and collections|
Trilobita - Redlichiida - Olenellidae
It was synonymized subjectively with Mesonacis by Lieberman (1999); it was reranked as Angustolenellus by Sepkoski (2002).
It was assigned to Olenellus by Palmer and Repina (1993); and to Olenellida 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.
|A. R. Palmer and L. N. Repina 1993||Species of Olerzelluswith posterior margin of cephalon directed slightly anterolaterally distal to position of intergenal spine. Intergenal spines intermediate between genal spine and axial furrow or closer to axial furrow than to genal spine. Sagittal length of preglabellar field equal to or slightly greater than that of anterior border. Posterior tips of ocular lobes directed nearly straight backward, situated opposite or anterior to midlength of Li.|