|Basic info||Taxonomic history||Classification||Relationships|
|Morphology||Ecology and taphonomy||External Literature Search||Age range and collections|
Trilobita - Asaphida - Asaphidae
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.
|L. Amati 2014||A species of Isotelus with facial sutures that diverge only slightly and for short distance in front of palpebral lobes then run nearly parallel until converge to mid-line. Frontal area very long (sag.), length about 20% total length of cranidium. Eye-stalks tall, extend well above maximum height of glabella. Lateral border of pygidium strongest over posterior 1/3 of pygidium, becomes much wider directly behind axis.|