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Cardiola lyoni
Taxonomy
Megambonia lyoni was named by Hall (1860). It is a 3D body fossil.
It was recombined as Cardiopsis lyoni by Driscoll and Hall (1963); it was recombined as Cardiola lyoni by Cox et al. (1969).
It was recombined as Cardiopsis lyoni by Driscoll and Hall (1963); it was recombined as Cardiola lyoni by Cox et al. (1969).
Sister species lacking formal opinion data
Synonyms
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Synonymy list
| Year | Name and author |
|---|---|
| 1859 | Megambonia lyoni Hall p. 110 |
| 1860 | Megambonia lyoni Hall p. 110 |
| 1860 | Cardiomorpha radiata Meek and Worthen p. 448 |
| 1866 | Cardiopsis radiata Meek and Worthen p. 157 figs. pl. 14 f. 6a-b |
| 1938 | Dexiobia radiata Branson figs. pl. 25 f. 23-24 |
| 1963 | Cardiopsis lyoni Driscoll and Hall pp. 1023 - 1024 |
| 1969 | Cardiola lyoni Cox et al. p. N245 |
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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.
†Cardiola lyoni Hall 1860
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Invalid names: Cardiomorpha radiata Meek and Worthen 1860 [replaced]
Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| F. B. Meek and A. H. Worthen 1860 (Cardiomorpha radiata) | Shell subcircular, gibbous in the central and umbonal regions, base more narrowly rounded than the front or anal margin; cardinal border a little arched; beaks gibbous, abruptly pointed, incurved and showing a tendency to curve forward at the immediate points, depressed or rising but little above the hinge margin; surface ornamented by numerous fine, regular, radiating, rather rounded striae, about equalling the depressions between. (Hinge and interior unknown.)
Allied to C. ovata of Hall (Rept. Survey Iowa, pl. 7, fig. 10), from near the same horizon, but more rounded in outline, and has much less elevated and less curved beaks. Both these species differ from typical forms of Cardiomorpha, Koninck, in having radiating striae, and may prove to be generically distinct when specimens showing the hinge and interior are obtained. |
Measurements
No measurements are available
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| Source: g = genus, subc = subclass, c = class | |||||
| References: Aberhan et al. 2004, Hendy 2009, Eaton 1871 | |||||
Age range: base of the Kinderhookian to the top of the Tournaisian or 358.86000 to 346.70000 Ma
Collections (2 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Tournaisian | USA (Iowa) | Cardiopsis radiata (3309) | |
| Kinderhookian - Osagean | USA (Missouri) | Cardiopsis lyoni (232758) |