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Kochaspis
Taxonomy
Kochaspis was named by Resser (1935) [Sepkoski's age data: Cm Tojo-l Cm lMid Sepkoski's reference number: 464,474]. Its type is Crepicephalus liliana.
It was assigned to Ptychoparioidea by Palmer (1954); to Ptychopariidae by Jell and Adrain (2002); to Ptychopariida by Palmer and Halley (1979) and Sepkoski (2002); and to Ptychopariacea by Sundberg and McCollum (2003).
It was assigned to Ptychoparioidea by Palmer (1954); to Ptychopariidae by Jell and Adrain (2002); to Ptychopariida by Palmer and Halley (1979) and Sepkoski (2002); and to Ptychopariacea by Sundberg and McCollum (2003).
Species
Species lacking formal opinion data
Synonyms
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Synonymy list
| Year | Name and author |
|---|---|
| 1935 | Paleocrepicephalus Kobayashi p. 277 |
| 1935 | Kochaspis Resser p. 36 |
| 1954 | Kochaspis Palmer p. 79 |
| 1979 | Kochaspis Palmer and Halley p. 105 |
| 2002 | Kochaspis Jell and Adrain p. 393 |
| 2002 | Kochaspis Sepkoski |
| 2003 | Kochaspis Sundberg and McCollum p. 345 |
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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. †Kochaspis Resser 1935
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†Kochaspis cooperi Lochman 1952
†Kochaspis gogensis Walcott 1917
†Kochaspis nevadensis Resser 1935
†Kochaspis unzia Walcott 1916
†Kochaspis upis Walcott 1916
Invalid names: Paleocrepicephalus Kobayashi 1935 [synonym]
Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| A. R. Palmer 1954 | Cranidium subquadrate in outline, gently to moderately rounded anteriorly. Glabella well de- fined by dorsal furrow, straight sided or with sides slightly bowed outward, tapered forward, bluntly rounded anteriorly. Three pairs of deep glabellar fur- rows present. Occipital furrow deep. Occipital ring gently to moderately arched upward. Frontal area with distinct brim and border; border gently arched upward; marginal furrow shallow on midline, broad, deep distally. Width of fixed cheeks more than one- half width of glabella; prominent ocular ridges present. Palpebral lobes situated opposite middle third of gla- bella, poorly defined by shallow palpebral furrow. Length of posterior limbs about equal to width of glabella at occipital furrow; marginal furrow deep. Anterior course of facial suture nearly straight forward from palpebral lobe; posterior course divergent from longitudinal cranidial axis.
Free cheek and thorax unknown. Pygidium, excluding spines, subquadrate in outline. Axial lobe prominent, distinctly furrowed, variable in length; width slightly more than one-half width of pleural lobes. Pleural segments coalesced distally to form a pair of posteriorly directed marginal spines. Outer surface of carapace covered with scattered large granules; inner surface smooth |
Measurements
No measurements are available
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| Source: g = genus, subo = suborder, c = class | |||||
| References: Aberhan et al. 2004, Hendy 2009, Fortey and Owens 1999 | |||||
Collections (19 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Delamaran | Canada (British Columbia) | Ptychoparia gogensis (225278) | |
| Delamaran | USA (Nevada) | K. liliana (149562 149563) | |
| Delamaran - Menevian | Mexico | K. sp. (10687) | |
| St Davids | USA (Nevada) | K. liliana (50098 50100 50101 50106 50110 50112 50115 50297 50300 50326 50334) K. sp. (50103 50298) | |
| Menevian | USA (Idaho) | K. maladensis (50208) | |
| Merioneth | USA (Idaho) | K. sp. (198) |