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Holmiella millerensis
Taxonomy
Holmiella millerensis was named by Hollingsworth (2006). Its type specimen is UCLA 38541, an exoskeleton, and it is a mold. Its type locality is LACMIP loc. 26933, Miller Mountain, which is in a Montezuman deep subtidal siltstone in the Campito Formation of Nevada.
Synonymy list
| Year | Name and author |
|---|---|
| 2006 | Holmiella millerensis Hollingsworth pp. 328 - 329 figs. Figure 14 |
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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.
†Holmiella millerensis Hollingsworth 2006
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Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| J. S. Hollingsworth 2006 | Cephalon subtrapezoidal with rounded posterolat- eral margins. Genal spine advanced to anterior portion of ce- phalon, initially forward-directed then curving outward to straight backward to a length greater than length of entire carapace. Gla- bella slightly expanded anteriorly with shallow S3 furrow. Ocular lobes very close to glabella; extraocular area is about 2.5 times width (tr.) of interocular area. Pygidium wide (tr.), more than twice pygidial length, pygidial axis narrow, about one-fourth pygidial width. |
Measurements
No measurements are available
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| Source: f = family, o = order, c = class | |||||
| References: Hendy et al. 2009, Aberhan et al. 2004, Whittington et al. 1997 | |||||
Age range: Montezuman or 520.00000 to 515.30000 Ma
Collections: one only
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Montezuman | USA (Nevada) | Holmiella millerensis (type locality: 140649) |