Basic info | Taxonomic history | Classification | Included Taxa |
Morphology | Ecology and taphonomy | External Literature Search | Age range and collections |
Coulonia
Taxonomy
Coulonia was named by de Loriol (1874). It is not extant. Its type is Coulonia neocomiensis.
It was assigned to Astropectinidae by de Loriol (1874), Villier (2010), Gale (2020) and Ewin and Gale (2020).
It was assigned to Astropectinidae by de Loriol (1874), Villier (2010), Gale (2020) and Ewin and Gale (2020).
Synonyms
|
Synonymy list
Year | Name and author |
---|---|
1874 | Coulonia de Loriol p. 13 |
1955 | Cuneaster Hess |
1966 | Cuneaster Spencer and Wright p. U45 |
1998 | Betelgeusia Blake and Reid |
2002 | Betelgeusia Sepkoski |
2002 | Cuneaster Sepkoski |
2005 | Betelgeusia Blake and Jagt p. 187 |
2010 | Coulonia Villier p. 704 |
2011 | Betelgeusia Blake and Reboul p. 1026 |
2011 | Betelgeusia Gale p. 57 |
2018 | Betelgeusia Blake et al. p. 199 |
2020 | Coulonia Ewin and Gale pp. 932-934 |
2020 | Coulonia Gale p. 310 |
Is something missing? Join the Paleobiology Database and enter the data
|
|
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. †Coulonia de Loriol 1874
show all | hide all
†Coulonia caseyi Gale 2020
†Coulonia colei Forbes 1852
†Coulonia neocomiensis de Loriol 1874
hide
Invalid names: Cuneaster hauteriviensis Hess 1955 [synonym]
†Coulonia parva Neumann and Hess 2001
†Coulonia platispina Hess and Blake 1995
†Coulonia platyspina Hess and Blake 1995
hide
Invalid names: Betelgeusia orientalis Blake and Reboul 2011 [synonym]
Invalid names: Betelgeusia Blake and Reid 1998 [synonym], Cuneaster Hess 1955 [objective synonym]
Diagnosis
Reference | Diagnosis | |
---|---|---|
D. B. Blake and R. Reid 1998 (Betelgeusia) | Radiasterid with relatively large, transversely elongate marginals; distal marginals particularly suggestive of those of Astropecten. Inferomarginals with well-developed lateral spine fringe. Actinals with elongate, slender, conical spines. Adambulacral furrow spines about 5; many elongate, slender spines on actinal surface. Madreporite large, near disk center, not partially covered by paxillae. | |
T.A.M. Ewin and A.S. Gale 2020 | Astropectinids with relatively short arms; actinal interareas very broad, interradial margin evenly curved. Marginals short and very broad (ratio of 3.5:1), tapering gently towards the lateral margin with very deep intermarginal fasciolar grooves. Inferomarginals bear coarse, irregularly sized spine pits arranged transversely, and have a short abactinal surfaces. Superomarginals 30% narrower than inferomarginals, wedging laterally, external face flat, bearing evenly distributed pits for short, blunt spines. | |
A.S. Gale 2020 | Astropectinids which possess broad interradii and relatively short arms; marginal frame broad, made up of short, broad inferomarginals which taper gently towards lateral margins and slightly narrower superomarginals; deep fascioles run abactinally-actinally between each supero-inferomarginal pair, extending over nearly half breadth of marginals. |