| Basic info | Taxonomic history | Classification | Included Taxa |
| Morphology | Ecology and taphonomy | External Literature Search | Age range and collections |
Parkaspis
Taxonomy
Parkaspis was named by Rasetti (1951) [Sepkoski's age data: Cm mMid-u Sepkoski's reference number: 81,1089]. It is not extant.
It was assigned to Zacanthoididae by Sundberg (1994), Jell and Adrain (2002); and to Corynexochida by Sepkoski (2002).
It was assigned to Zacanthoididae by Sundberg (1994), Jell and Adrain (2002); and to Corynexochida by Sepkoski (2002).
Species
Species lacking formal opinion data
Synonymy list
| Year | Name and author |
|---|---|
| 1951 | Parkaspis Rasetti |
| 1994 | Parkaspis Sundberg p. 43 |
| 2002 | Parkaspis Jell and Adrain p. 422 |
| 2002 | Parkaspis Sepkoski |
Is something missing? Join the Paleobiology Database and enter the data
|
|
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.
Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| F. A. Sundberg 1994 | Zacanthoididae with cranidia with expanding glabella, preglabellar field absent, anterior border present, long, narrow, mod- erately curved palpebral lobes terminating opposite preoccipital lobe, facial sutures widely divergent anterior of palpebral lobes. Thoracic axial lobe not as wide (trans.) as pleural lobes exclusive of spines. Small,transverselyelongatepygidiumwithaxiallobe 40% or greater of pygidial width, pleural furrows moderate depth, border furrow indistinct, 4-6 pairs of posteriorly directed, rounded spines on posterior margin. |
Measurements
No measurements are available
|
|
||||
|
|
||||
|
|
||||
|
|
||||
|
|
||||
|
|
||||
| Source: f = family, o = order, c = class | |||||
| References: Hendy 2009, Aberhan et al. 2004, Hendy et al. 2009 | |||||
Collections (32 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Delamaran | USA (Nevada) | P. drumensis (134248 134249 134251 134252 134253 134254 134255) | |
| Delamaran | USA (Utah) | P. drumensis (10565 134068 134069 134070 134111 134112 134113 134114 134115 134116 134117) | |
| Solvan | Canada (Newfoundland and Labrador) | P. caboti (10814 10815 10816 10817 10819 10824 10826 10827 10828 10834 10840 10846) | |
| St Davids | Canada (British Columbia) | P. decamera (215 122094) |