| Basic info | Taxonomic history | Classification | Included Taxa |
| Morphology | Ecology and taphonomy | External Literature Search | Age range and collections |
Taxonomy
Isotelus violaensis was named by Amati (2014) [= ?1987. Isotelus homalonotoides (Walcott, 1877) in DeMott, pl. 3, figs. 21-26.]. Its type specimen is OU 11782, a cephalon/head (exfoliated cranidium), and it is a 3D body fossil. Its type locality is 99-48. U.S. Highway 99 Section, which is in a Turinian carbonate limestone in the Bromide Formation of Oklahoma.
Synonymy list
| Year | Name and author |
|---|---|
| 2014 | Isotelus violaensis Amati pp. 12 - 14 figs. Pl. 3, Figs. 6-8, Pl. 4, Pl. 5, Figs. 1-3, ?4 |
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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.
†Isotelus violaensis Amati 2014
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Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| 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. |
Measurements
No measurements are available
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| Source: g = genus, f = family, o = order, c = class | |||||
| References: Hendy 2009, Hendy et al. 2009, Aberhan et al. 2004 | |||||
Age range: Turinian or 457.30000 to 453.80000 Ma
Collections (2 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Turinian | USA (Oklahoma) | Isotelus violaensis (type locality: 164839) | |
| Rocklandian | USA (Iowa/Wisconsin) | Isotelus homalonotoides (23116) |