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Compsasteridae
Taxonomy
Compsasteridae was named by Schuchert (1915). Its type is Compsaster. It was considered monophyletic by Blake and Hagdorn (2003).
It was assigned to Urasterellacea by Schuchert (1915); to Urasterina by Lehmann (1957); to Uractinina by Spencer and Wright (1966); to Uractinida by Blake (1989); to Asteroidea by Blake (2002); and to Ambuloasteroidea by Blake and Hagdorn (2003), Blake (2018).
It was assigned to Urasterellacea by Schuchert (1915); to Urasterina by Lehmann (1957); to Uractinina by Spencer and Wright (1966); to Uractinida by Blake (1989); to Asteroidea by Blake (2002); and to Ambuloasteroidea by Blake and Hagdorn (2003), Blake (2018).
Subtaxa
Compsaster (type genus), Schlueteraster
Synonymy list
| Year | Name and author |
|---|---|
| 1915 | Compsasteridae Schuchert pp. 163, 191-192 |
| 1957 | Compsasteridae Lehmann p. 134 |
| 1966 | Compsasteridae Spencer and Wright p. U74 |
| 1989 | Compsasteridae Blake p. 213 |
| 2002 | Compsasteridae Blake pp. 363-364 |
| 2003 | Compsasteridae Blake and Hagdorn p. 34 |
| 2018 | Compsasteridae Blake p. 50 |
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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.
Fm. †Compsasteridae Schuchert 1915
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G. †Compsaster Worthen and Miller 1883
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†Compsaster formosus Worthen and Miller 1883
†Compsaster spiniger Wright 1880
Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| D. B. Blake 2002 | Body wall beyond mouth frame and ambulacra sturdy, constructed entirely of closely fitted paxillate ossicles. Marginal, carinal, lateral carinal, primary circlet ossicles weakly differentiated from one another. Paxillary crown weakly expanded; column waisted. Waist long or short, depending on oscicle position on animal; base faceted for papulae in dorsal-surface ossicles but robust, compressed, rectangular in lateral outline with adradial cross axis articular structures similar to corresponding arrangments of post-Paleozoic asteroids. Ambulacral-adambulacral articular surfaces appear faceted and therefore offset but with an open lateral pocket at juncture of ambulacrals, adambulacrals. Adambulacrals, perhaps some marginals and abactinals with robust, grooved, conical spines. Mouth angle ossicles, proximal adambulacrals with robust spoon-shaped spines. |
Measurements
No measurements are available
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| Source: f = family, c = class, p = phylum | |||||
| References: Blake 2002, Aberhan et al. 2004, Aberhan 1992 | |||||
Age range: base of the Early/Lower Emsian to the top of the Pendleian or 410.62000 to 326.90000 Ma
Collections (3 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Early/Lower Emsian | Germany | Compsaster petaliformis, Schlueteraster schlueteri (26904) | |
| Chesterian | USA (Illinois) | Compsaster formosus (20) | |
| Pendleian | USA (Illinois) | Compsaster formosus (90821) |