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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 Ptychopariida by Sepkoski (2002); and to Alokistocaridae by Jell and Adrain (2002).
It was assigned to Altiocculinae by Sundberg (1994); to Ptychopariida by Sepkoski (2002); and to Alokistocaridae by Jell and Adrain (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. |