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Eldredgeops rana
Taxonomy
Calymene bufo rana was named by Green (1832). It is a 3D body fossil.
It was recombined as Phacops rana by Hall (1861), Walcott (1884) and Eldredge (1972); it was recombined as Eldredgeops rana by Struve (1990).
It was recombined as Phacops rana by Hall (1861), Walcott (1884) and Eldredge (1972); it was recombined as Eldredgeops rana by Struve (1990).
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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 rana Green 1832
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†Phacops rana bellensis Stumm 1953
†Phacops rana milleri Stewart 1927
†Phacops rana norwoodensis Stumm 1953
†Phacops rana arkonensis Stumm 1953
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Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| N. Eldredge 1972 | Eyes large, bearing from 15 to 18 dorsoventral files of lenses in normal adults. Trace of facial suture over ocular platform shallow. Genal angles gently rounded and near ventral cephalic margin. Glabella furrow lp deeply incised, glabellar furrows 2p and 3p weakly developed or absent. Cephalon covered by low, rounded tubercles becoming transversely elongate at the anterior margin of the glabella, on the genae, and on the occipital lobe. Tubercles largest on central region ofcomposite glabellar lobe and glabellar Jobe lp. Axis of thorax covered with transversely elongate tubercles. Tuberculation on pleura variably developed.
Pygidium with from seven to 10 axial rings and six or seven pleura. Tubercles moderately elongate transversely on axis; tubercles cover pleura, becoming obsolescent on pygidial mar- gin. Interpleural furrows generally obsolescent, anteriormost interpleural furrow occasionally present as shallow groove set off by parallel rows oftubercles. Pleural furrows rather shallow, pleura only moderately arched. |