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Eldredgeops crassituberculata
Taxonomy
Phacops rana crassituberculata was named by Stumm (1953). It is not extant. Its type specimen is UMMP 25537.
It was recombined as Eldredgeops crassituberculata by Schoenemann and Clarkson (2011).
It was recombined as Eldredgeops crassituberculata by Schoenemann and Clarkson (2011).
Synonymy list
| Year | Name and author |
|---|---|
| 1953 | Phacops rana crassituberculata Stumm pp. 137 - 138 figs. pl. 9 f. 5-13; pl. 10 f. 19-21 |
| 2011 | Eldredgeops crassituberculata Schoenemann and Clarkson |
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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.
†Eldredgeops crassituberculata Stumm 1953
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Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| E. C. Stumm 1953 | Glabella inflated, with a nearly vertical front. Genal angles rounded. Eyes large, with average of 77 facets in vertical rows with 6 to 7 facets in a row and an average of 17 rows in each eye. Number of facets ranging from 66 to 89 in eyes of different specimens. Facets separated by flat-topped polygonal ridges. Palpebral lobes as in P. ram. First and second glabellar furrows lacking except on internal molds; third glabellar lobe and occipital ring as in P. rana. Ornamentation of cephalon consisting of tubercles; those on posterior part of glabella being large, rounded or flat-tophed, averaging 1 mm. in diameter. Tubercles becoming progressively smaller toward anterior margin of glabella. Ornamentation of remainder of cephalon as in P. rana.
Thorax and pygidium as in P. rana except rachis of some specimens composed of as many as 9 annulations. |