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Altiocculus
Taxonomy
Altiocculus was named by Sundberg (1994) [Sepkoski's age data: Cm mMid-u Sepkoski's reference number: 1089]. Its type is Altiocculus drumensis. It is the type genus of Altiocculinae.
It was assigned to Altiocculinae by Sundberg (1994); to Alokistocaridae by Jell and Adrain (2002); and to Ptychopariida by Sepkoski (2002).
It was assigned to Altiocculinae by Sundberg (1994); to Alokistocaridae by Jell and Adrain (2002); and to Ptychopariida by Sepkoski (2002).
Species
A. americanus, A. cataractense, A. concavus, A. drumensis (type species), A. harrisi, A. sinuatum, A. striatus
Synonymy list
| Year | Name and author |
|---|---|
| 1994 | Altiocculus Sundberg pp. 91 - 93 |
| 2002 | Altiocculus Jell and Adrain p. 465 |
| 2002 | Altiocculus Sepkoski |
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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.
G. †Altiocculus Sundberg 1994
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†Altiocculus americanus Walcott 1916
†Altiocculus cataractense Rasetti 1951
†Altiocculus concavus Sundberg 1994
†Altiocculus drumensis Sundberg 1994
†Altiocculus harrisi Robison 1971
†Altiocculus sinuatum Rasetti 1951
†Altiocculus striatus Nan and Chang 1980
Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| F. A. Sundberg 1994 | Large, micropvgous Altiocculinae with cranidium with typically moderate length (20- 30% glabellar length), posteriorly set, elevated pal- pebral lobes; strongly downsloping anterior area of fixigena; very strongly tapered glabella; median swelling posterior of anterior border furrow; no deep pits in anterior border furrow; secondary preoccipital lobes; narrow posterior area of fixi- genae (15-30% glabellar length); coarse granular
ornamentation. Pygidium subelliptical; transversely elongate; narrow, level border; moderately to moderately weak convex anterior pleural bands; strongly convex posterior pleural bands. |
Measurements
No measurements are available
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| Source: f = family, c = class | |||||
| References: Aberhan et al. 2004, Hendy 2009 | |||||
Age range: base of the Middle Cambrian to the top of the Marjumian or 506.50000 to 497.00000 Ma
Collections (20 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Delamaran | USA (Utah) | A. concavus (10565 134117) A. drumensis (134059 134060 134061 134066) | |
| Delamaran | USA (Nevada) | A. drumensis (134245) | |
| Delamaran - Marjumian | USA (Nevada) | A. drumensis (225257) | |
| Middle Cambrian | India | A. striatus (114666 116460) | |
| Marjumian | USA (Utah) | Alokistocare harrisi (56144) A. harrisi (230679 230682) | |
| Marjumian | USA (Georgia) | Alokistocare americanum (8390 8391 8393 8394 8396 8397 8584) |