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Morphology | Ecology and taphonomy | External Literature Search | Age range and collections |
Chevronida
Taxonomy
Chevronida was named by Gale (2018). It is extant. It was considered monophyletic by Gale (2018).
It was assigned to Spinulosida by Gale (2018).
It was assigned to Spinulosida by Gale (2018).
Subtaxa
Synonymy list
Year | Name and author |
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2018 | Chevronida Gale p. 293 |
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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. Chevronida Gale 2018
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Fm. Tremasteridae Sladen 1889
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G. †Mesotremaster Hess 1972
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†Mesotremaster felli Hess 1972
†Mesotremaster mazetieri Mercier 1935
†Mesotremaster zbindeni Hess 1981
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 | |
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A.S. Gale 2018 | Spinulosida in which plate-roofed interradial channels extend from the distal surface of the primary interradial ossicles to the proximal surface of the odontophore. |
Measurements
No measurements are available
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Source: o = order, c = class, p = phylum | |||||
References: Blake 1990, Aberhan 1992, Aberhan et al. 2004 |
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 (13 total)
Time interval | Ma | Country or state | Original ID and collection number |
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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 | Mesotremaster felli, Plesiosolaster moretonis (32036) | |
Bajocian | Switzerland | Xandarosaster hessi (32021) | |
Late/Upper Bathonian | France | Stauraster mazetieri (72284) | |
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) |