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Bailiaspis
Taxonomy
Bailiaspis was named by Resser (1936) [Sepkoski's age data: Cm mMid-l Cm uMid-l Sepkoski's reference number: 81].
It was assigned to Ptychopariida by Sepkoski (2002); and to Conocoryphidae by Resser (1936), Jell and Adrain (2002).
It was assigned to Ptychopariida by Sepkoski (2002); and to Conocoryphidae by Resser (1936), Jell and Adrain (2002).
Species
Synonymy list
| Year | Name and author |
|---|---|
| 1936 | Bailiaspis Resser p. 18 |
| 2002 | Bailiaspis Jell and Adrain p. 346 |
| 2002 | Bailiaspis Sepkoski |
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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. †Bailiaspis Resser 1936
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†Bailiaspis bufo Hicks 1865
†Bailiaspis dalmani Angelin 1878
†Bailiaspis elegans Hartt 1868
†Bailiaspis emarginata Linarsson 1877
†Bailiaspis glabrata Angelin 1878
†Bailiaspis granulata Matthew 1885
†Conocoryphe emarginata longifrons Cobbold 1911
Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| C. E. Resser 1936 | All features normal for the family. Cephalon and pygidium like Bailiella except for the rim of cephalon. Rim thickened and extended backward in the middle, sufficiently in some species to connect the anterior furrow with the dorsal furrow.
Some species were referred to Ctenocephalus because the thickened rim simulates a median boss, but examination of the specimens shows at once that the structure is quite different. |
Measurements
No measurements are available
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| Source: f = family, c = class | |||||
| References: Whittington et al. 1997, Aberhan et al. 2004 | |||||
Age range: base of the Guzhangian to the top of the Menevian or 500.50000 to 499.50000 Ma
Collections (11 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Middle Cambrian | France (Languedoc-Roussillon) | B. griffei (198926) B. souchoni (198925) | |
| Middle Cambrian | France | B. souchoni (199040) | |
| St Davids | Canada (New Brunswick) | B. elegans (49070) | |
| St Davids | Canada (Newfoundland and Labrador) | B. venusta (49059) | |
| Mayan | Russian Federation | B. menneri (10029) | |
| Menevian | Sweden (Scania) | B. sp. (176679 179691) | |
| Marjumian | USA (Alaska) | B. picta (10508) | |
| Guzhangian | Spain (Aragon) | B. glabrata (229080) | |
| Guzhangian | Spain | B. glabrata (182506) |