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Ptychocaulus bivittata
Taxonomy
Murchisonia bivittata was named by Hall (1852). It is not a trace fossil. Its type locality is Eurypterid-associated biota of the dolomite of the Lockport Fmn. at Elora, Ont., which is in a Ludlow open shallow subtidal dolomite in the Guelph Formation of Canada.
It was recombined as Coelocaeulus bivittata by Ulrich and Scofield (1897) and Whiteaves (1906); it was recombined as Coelidium bivittata by Parks (1915); it was recombined as Ptychocaulus bivittata by Wagner (2023).
It was recombined as Coelocaeulus bivittata by Ulrich and Scofield (1897) and Whiteaves (1906); it was recombined as Coelidium bivittata by Parks (1915); it was recombined as Ptychocaulus bivittata by Wagner (2023).
Synonymy list
| Year | Name and author |
|---|---|
| 1852 | Murchisonia bivittata Hall p. 345 figs. pl. 83 f. 1a-b |
| 1875 | Murchisonia bivittata Nicholson p. 546 figs. pl. 26 f. 7 |
| 1897 | Coelocaeulus bivittata Ulrich and Scofield p. 1020 |
| 1906 | Coelocaeulus bivittata Whiteaves p. 334 |
| 1915 | Coelidium bivittata Parks p. 58 |
| 2023 | Ptychocaulus bivittata Wagner p. 3463 |
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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.
†Ptychocaulus bivittata Hall 1852
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Diagnosis
No diagnoses are available