|Basic info||Taxonomic history||Classification||Relationships|
|Morphology||Ecology and taphonomy||External Literature Search||Age range and collections|
Trilobita - Redlichiida - Laudoniidae
It was assigned to Wanneriinae by Harrington (1956); to Olenellidae by Whittington et al. (1997); to Laudoniinae by Palmer and Repina (1993) and Lieberman (1999); and to Olenellida by Sepkoski (2002).
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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.
|H. J. Harrington 1956||Wannneriinae with well advanced genal spines. Metagenal spines well developed in adult. Metagenal angle slightly obtuse to slightly acute. Glabella with three pairs of lateral glabellar lobes and a pair of small depressions in front of the first lateral glabellar furrow. Glabella tapering backward. Frontal glabellar lobe ex- panded anteriorly, reaching the anterior border of cephalon. Eye lobes short, sub-median (slightly posterior) reaching level of anterior third of second (3p) lateral glabellar lobe. Posterior genal ridge conspicuous. Cephalic border wide, slightly raised and flat.|
|A. R. Palmer and L. N. Repina 1993||Laudoniinae with cephalon subquadrate to subpentagonal in outline. Genal spine originating opposite or anterior to L3. Procranidial spines not developed in adult. Intergenal ridge distinct. Preglabellar field absent or shorter than border. Posterior tips of ocular lobes opposite or anterior to Li. Thorax of about 20 segments. External sculpture reticulate.