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Velatida
Taxonomy
Velatida was named by Perrier (1893) [Initial spelling "Velata", corrected by Blake (1987)]. It is extant. It was considered monophyletic by Gale (2011) and Gale (2018).
It was reranked as the unranked clade Velatida by Gale (2011) and Gale (2018).
It was assigned to Asteroidea by Perrier (1893) and Hess (1972); to Spinulosacea by Blake (1989); to Spinulosida by Gale (2011); to Valvatacea by Mah and Blake (2012); to Neoasteroidea by Blake (2018); and to Chevronida by Gale (2018).
It was reranked as the unranked clade Velatida by Gale (2011) and Gale (2018).
It was assigned to Asteroidea by Perrier (1893) and Hess (1972); to Spinulosacea by Blake (1989); to Spinulosida by Gale (2011); to Valvatacea by Mah and Blake (2012); to Neoasteroidea by Blake (2018); and to Chevronida by Gale (2018).
Synonymy list
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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.
Unr. Velatida Perrier 1893
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Unr. Pterasteridae Perrier 1875
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G. Pteraster Müller and Troschel 1842
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†Pteraster angulatus Gale 2022
†Pteraster balticus Gale 2022
†Pteraster cretachiton Gale 2022
†Pteraster kutscheri Gale 2022
†Pteraster lyddenensis Gale 2023
†Pteraster nudus Gale 2022
†Pteraster paucispinus Gale 2022
†Pteraster seafordensis Gale 2022
†Pteraster turoniense Gale 2022
G. †Savignaster Gale 2011
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†Savignaster septemtrionalis Rousseau et al. 2018
†Savignaster wardi Gale 2011
Fm. †Tropidasteridae Wright 1880
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Invalid names: Caymanostellidae Belyaev 1974 [empty], Myxasteridae Perrier 1891 [empty]
Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| A.S. Gale 2018 | Chevronids in which the actinal surface is constructed entirely from adambulacrals, which extend from the ambulacral grooves to the ambitus; actinal ossicles are absent. |
Measurements
No measurements are available
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| Source: o = order, c = class, p = phylum | |||||
| References: Aberhan et al. 2004, Aberhan 1992, Blake 1990 | |||||
Age range
Maximum range based only on fossils: base of the Hettangian to the top of the Early/Lower Maastrichtian or 201.30000 to 66.00000 Ma
Minimum age of oldest fossil (stem group age): 199.3 Ma
Minimum age of oldest fossil (stem group age): 199.3 Ma
Collections (12 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Hettangian | Switzerland | Plesiastropecten hallovensis (32020) | |
| Early/Lower Hettangian | Switzerland | Plesiastropecten hallovensis (32019) | |
| Sinemurian | Antarctica | Protremaster universalis (92930) | |
| Pliensbachian | France | Plumaster sp., Tropidaster pectinatus (106348) | |
| Davoei | United Kingdom (England) | Tropidaster pectinatus (33336) | |
| Middle Toarcian | France (Poitou-Charentes) | Plesiastropecten hallovensis (31839) | |
| Late/Upper Bajocian | Switzerland | Plesiosolaster moretonis (32036) | |
| Bajocian | Switzerland | Xandarosaster hessi (32021) | |
| Early/Lower Callovian | France | Solaster sp. (58221) | |
| Late/Upper Oxfordian | France | Plumaster sp., Savignaster wardi (61724) | |
| Late/Upper Campanian | Belgium (Liege) | Pteraster sp. (32150) | |
| Early/Lower Maastrichtian | Germany (Mecklenburg-Vorpommern) | Pteraster sp. (32022) |