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Chanciaopsis
Taxonomy
Chanciaopsis was named by Sundberg (1994) [Sepkoski's age data: Cm mMid-u Sepkoski's reference number: 1089]. Its type is Chanciaopsis heteromorphos.
It was assigned to Ptychopariina by Sundberg (1994); to Ptychopariida by Sepkoski (2002); and to Alokistocaridae by Jell and Adrain (2002).
It was assigned to Ptychopariina by Sundberg (1994); to Ptychopariida by Sepkoski (2002); and to Alokistocaridae by Jell and Adrain (2002).
Species
Synonymy list
| Year | Name and author |
|---|---|
| 1994 | Chanciaopsis Sundberg pp. 103 - 105 |
| 2002 | Chanciaopsis Jell and Adrain p. 465 |
| 2002 | Chanciaopsis 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. †Chanciaopsis Sundberg 1994
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†Chanciaopsis heteromorphos Sundberg 1994
†Chanciaopsis odarayensis Rasetti 1951
†Chanciaopsis palliseri Walcott 1908
Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| F. A. Sundberg 1994 | Large, micropygous Ptychopariida with subrectangular to subpentagonal cranidium with strongly to very strongly tapered glabella; secondary basal glabellar lobe weakly developed; gla bella width approximately 25% cranidial width; short to moderate length, medially set, non-elevat- ed palpebral lobes; slightly to very strongly down- sloping anterior area of fixigena and preglabellar field; median swelling, when present, posterior of anterior border furrow; moderately wide posterior area of fixigenae, rounded terminations; smooth or fine granules. |
Measurements
No measurements are available
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| Source: f = family, c = class | |||||
| References: Hendy 2009, Aberhan et al. 2004 | |||||
Collections (17 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Delamaran | USA (Nevada) | C. heteromorphos (134249 134252 134253 134254 134255 134256) | |
| Delamaran | Canada (British Columbia) | Chancia odarayensis (225256) Chancia palliseri (84432) | |
| Delamaran | USA (Utah) | C. heteromorphos (134111 134112 134113 134114 134115 134116 134117) | |
| St Davids | Canada (British Columbia) | Chancia palliseri (215 122094) |