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Ulrichaster
Taxonomy
Ulrichaster was named by Spencer (1950) [Sepkoski's age data: O m S Ldov]. It is not extant. Its type is Urasterella ulrichi.
It was synonymized subjectively with Urasterella by Dean Shackleton (2005).
It was assigned to Uractinida by Sepkoski (2002); and to Urasterellidae by Owen (1965), Spencer and Wright (1966), Jell and Theron (1999), Blake and Rozhnov (2007), Blake (2018), Blake and Koniecki (2020).
It was synonymized subjectively with Urasterella by Dean Shackleton (2005).
It was assigned to Uractinida by Sepkoski (2002); and to Urasterellidae by Owen (1965), Spencer and Wright (1966), Jell and Theron (1999), Blake and Rozhnov (2007), Blake (2018), Blake and Koniecki (2020).
Species
Synonymy list
| Year | Name and author |
|---|---|
| 1950 | Ulrichaster Spencer |
| 1965 | Ulrichaster Owen p. 566 |
| 1966 | Ulrichaster Spencer and Wright p. U74 |
| 1999 | Ulrichaster Jell and Theron p. 155 |
| 2002 | Ulrichaster Sepkoski |
| 2007 | Ulrichaster Blake and Rozhnov p. 524 |
| 2018 | Ulrichaster Blake p. 35 |
| 2020 | Ulrichaster Blake and Koniecki p. 20 figs. 9.5-9.10 |
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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. †Ulrichaster Spencer 1950
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†Ulrichaster macrodentatus Jell and Theron 1999
†Ulrichaster ulrichi Schuchert 1915
Diagnosis
No diagnoses are available
Measurements
No measurements are available
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| Source: f = family, c = class, p = phylum | |||||
| References: Aberhan 1992, Blake and Rozhnov 2007, Aberhan et al. 2004 | |||||
Age range: base of the Blackriveran to the top of the Eifelian or 457.30000 to 387.95000 Ma
Collections (4 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Blackriveran | USA (Illinois, Iowa) | Urasterella ulrichi (23431) | |
| Blackriveran - Rocklandian | USA (Minnesota) | Urasterella ulrichi (23400) | |
| Eifelian | South Africa | U. macrodentatus (35592 35597) |