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Diedrorynchus conalatum
Taxonomy
Conocardium conalatum was named by Branson (1942).
It was recombined as Pseudoconocardium conolatum by Hoare (1990); it was recombined as Apotocardium conolatum by Hoare et al. (2002); it was recombined as Diedrorynchus conalatum by Hoare (2006), Wagner (2023).
It was recombined as Pseudoconocardium conolatum by Hoare (1990); it was recombined as Apotocardium conolatum by Hoare et al. (2002); it was recombined as Diedrorynchus conalatum by Hoare (2006), Wagner (2023).
Synonyms
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Synonymy list
| Year | Name and author |
|---|---|
| 1856 | Conocardium cuneatum Hall p. 14 |
| 1882 | Conocardium cuneatum Whitfield p. 60 figs. pl. 7 f. 24-26 |
| 1883 | Conocardium cuneatum Hall pp. 345 - 346 figs. pl. 30 f. 24-26 |
| 1942 | Conocardium conalatum Branson p. 388 |
| 1990 | Pseudoconocardium conolatum Hoare p. 730 figs. f. 3.21 |
| 2002 | Apotocardium conolatum Hoare et al. |
| 2006 | Diedrorynchus conalatum Hoare p. 162 figs. 2.10 - 2.17 |
| 2023 | Diedrorynchus conalatum Wagner p. S4115 |
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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.
†Diedrorynchus conalatum Branson 1942
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Invalid names: Conocardium cuneatum Hall 1856 [replaced]
Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| J. Hall 1883 (Conocardium cuneatum) | Shell sub-trigonal or abruptly clavate; hinge-line straight; beaks anchylosed, incurved, very small, rising but little above the hinge-line; umbonal slope angular; anterior side truncate, concave just within the angle of the umbonal slope, convex in the middle, and abruptly produced above, in continuation of the hinge-line, into a tubular wing; posterior side vertically compressed, straight along the hinge-line, and abruptly declining at the extremity, sloping along the base from the center of the shell to the extremity. Hiatus elongate, extending forward to near the middle of the shell, rounded and expanded at the posterior extremity, and deeply crenulate in the margins of the narrower part. Surface marked by distinct radiating costre, which often alternate in size or bifurcate on the posterior part of the shell, crossed by fine elevated concentric lines of growth~ more or less closely arranged. Near the basal margin are some stronger sub-imbricating ridges parallel to the lines of growth. | |
| R. D. Hoare 2006 | Small bransoniid-like shell with non-inflated body; snout tapering slightly in dorsal view, separated from body by broad concavity; dorsal margin convex in lateral view; rostral face subcircular, concave laterally around rostrum; beaks opisthogyrate; rostral clefts present; ventral orifice small; anterior gape large, extending length of snout, slight constriction near anterior end, denticles short; large, rounded primary carina; 7-8 rounded, closely spaced, body costae; 13-14 narrower, more widely spaced costae on snout; 14 low, narrow, closely-spaced, concentric costae on rostral face; rostrum smooth; fine, closely spaced, comarginal lirae and coarse growth lines present; larval shell not preserved. |
Measurements
No measurements are available
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| Source: o = order, c = class | |||||
| Reference: Kiessling 2004 | |||||
Age range: Meramecian or 342.90000 to 335.40000 Ma
Collections (3 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Meramecian | USA (Indiana) | Conocardium cuneatum (129910 129912 129930) |