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Elliptocephala walcotti
Taxonomy
Elliptocephala walcotti was named by Lieberman (1999) [= Olenellus truemani Walcott; Fritz 1972:16, pl. 9, figs. 1–14.]. Its type specimen is GSC 27291 and is a 3D body fossil. Its type locality is Sekwi Formation - collection 73040, which is in a Cambrian marine dolomite in the Sekwi Formation of Canada.
Synonymy list
| Year | Name and author |
|---|---|
| 1999 | Elliptocephala walcotti Lieberman pp. 58 - 59 fig. 12.3 |
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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.
†Elliptocephala walcotti Lieberman 1999
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Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| B. S. Lieberman 1999 | Length (exsag.) of anterior cephalic border between lateral margins of L4 and genal spine angle equal to 50% to 60% length (sag.) of L0; L4 does not contact anterior border furrow and does not expand prominently dorsally; plectrum not visible in dorsal view; prominent parafrontal band visible, width (tr.) near ocular lobes equal to length (sag.) medially; ocular lobe only subtly separated from extraocular area by shelf; posterior end of ocular lobes extend back to S0; S3 jaggedly convex; S3, S2, S1 and S0 conjoined medially; S2 and S3 prominently incised; S1 transverse; intergenal angle represented by distinct dorsal swelling; posterior cephalic border between intergenal angle and genal spine transverse. |