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Taxonomy
Sphaerophthalmus was named by Angelin (1854) [Sepkoski's age data: Cm Fran-u Sepkoski's reference number: 81].
It was assigned to Olenidae by Jell and Adrain (2002); to Ptychopariida by Sepkoski (2002); and to Leptoplastinae by Høyberget and Bruton (2012).
It was assigned to Olenidae by Jell and Adrain (2002); to Ptychopariida by Sepkoski (2002); and to Leptoplastinae by Høyberget and Bruton (2012).
Species
Species lacking formal opinion data
Synonyms
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Synonymy list
| Year | Name and author |
|---|---|
| 1854 | Sphaerophthalmus Angelin |
| 1957 | Ctenopyge (Eoctenopyge) Henningsmoen pp. 183 - 187 |
| 2002 | Sphaerophthalmus Jell and Adrain p. 447 |
| 2002 | Sphaerophthalmus Sepkoski |
| 2012 | Sphaerophthalmus Høyberget and Bruton p. 436 |
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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. †Sphaerophthalmus Angelin 1854
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†Sphaerophthalmus alatus Boeck 1838
†Sphaerophthalmus angustus Westergard 1922
†Sphaerophthalmus arcus Høyberget and Bruton 2012
†Sphaerophthalmus drytonensis Cobbold 1934
†Sphaerophthalmus flagellifer Angelin 1854
†Sphaerophthalmus modestus Henningsmoen 1957
†Sphaerophthalmus postcurrens Westergard 1944
Invalid names: Eoctenopyge Henningsmoen 1957 [synonym]
Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| M. Høyberget and D. L. Bruton 2012 | Glabella convex, slightly tapering, longer than wide. Distinct occipital furrow, S1 pronounced abaxially. S2 and S3 short, shallow to obsolete. Anterior border upturned, moderately to strongly convex in frontal view. Centres of palpebral lobes opposite S1 to L2. Eye ridges oblique. Palpebral area markedly narrower than glabella at eye line. Posterior area as wide as to slightly wider than occipital ring (tr.). Posterolateral projection ventrally downflexed. Librigena with long and curved spine rounded in cross- section. Thorax consists of ten segments, pleural fields about as wide (tr.) as axis. Tenth segment with long axial spine. Pleural spines short, seventh pair elongated. Pygidium minute and triangular, one to two axial rings. Very long, backwardly curved caudal spine. One pair of short marginal spines. Pleural field less than half the width of axis. |
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 Jiangshanian to the top of the Stage 10 or 494.20000 to 486.85000 Ma
Collections (37 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Maentwrogian | Sweden | S. alatus (9889) | |
| Franconian | Sweden (Vastergotland) | S. sp., S. alatus (54184) | |
| Furongian | Norway (Oslo-Asker) | S. alatus (190332 190333) | |
| Furongian | Norway (Røyken) | S. drytonensis, S. postcurrens (190321) | |
| Furongian | Norway (Oslo Asker) | S. drytonensis, S. postcurrens (190317) | |
| Furongian | Norway (Hedmark) | S. alatus (190329) S. drytonensis, S. postcurrens (190342 190343) | |
| Furongian | Norway (Østlandet) | S. angustus (190327) | |
| Furongian | Poland | S. alatus (72275 223759) S. major (223760) | |
| Furongian | Sweden (Östergötland) | Ctenopyge flagellifera, Ctenopyge angusta (191157) | |
| Furongian | Norway (Oppland) | S. drytonensis, S. postcurrens (190341) | |
| Merioneth | Sweden (Västergötland) | S. alatus (190325 190326) | |
| Merioneth | Norway (Østlandet) | S. alatus (190322 190323) S. arcus, S. modestus (190328) | |
| Merioneth | Norway (Oslo Asker) | S. alatus (190286 190287) S. angustus (190288) S. arcus, S. flagellifer, S. modestus (190289) S. flagellifer, S. modestus (190290) | |
| Merioneth | Norway (Røyken) | S. alatus (190319) S. arcus, S. flagellifer, S. modestus (190335) S. arcus, S. modestus (190336) S. flagellifer, S. modestus (190320) | |
| Merioneth | Norway (Oslo-Asker) | S. arcus, S. modestus (190339) S. flagellifer, S. modestus (190337 190340) | |
| Merioneth | Norway | S. arcus, S. modestus (190338) | |
| Furongian - Tremadoc | Poland | S. alatus (72274) | |
| Jiangshanian - Stage 10 | Sweden | Ctenopyge modesta (203756) | |
| Stage 10 | Sweden | Ctenopyge angusta (203760) | |
| Stage 10 | Sweden (Västra Götaland) | S. alatus (133671) |