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Rhythmias
Taxonomy
Rhythmias was named by Jordan and Gilbert (1920) [Sepkoski's age data: T Mi-u Sepkoski's reference number: 863]. Its type is Rhythmias starrii.
It was assigned to Sparidae by Jordan and Gilbert (1920); to Sparidae by Jordan (1925), David (1943); and to Perciformes by Sepkoski (2002).
It was assigned to Sparidae by Jordan and Gilbert (1920); to Sparidae by Jordan (1925), David (1943); and to Perciformes by Sepkoski (2002).
Species
R. gaviotae, R. starrii (type species)
Synonymy list
| Year | Name and author |
|---|---|
| 1920 | Rhythmias Jordan and Gilbert p. 20 |
| 1925 | Rhythmias Jordan p. 31 |
| 1943 | Rhythmias David p. 139 |
| 2002 | Rhythmias Sepkoski |
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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.
G. †Rhythmias Jordan and Gilbert 1920
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†Rhythmias gaviotae David 1943
†Rhythmias starrii Jordan and Gilbert 1920
Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| D. S. Jordan and J. Z. Gilbert 1920 | A genus of SPARID.E, having the broad-elliptical form of the living genus LAGODON. Head rather large, obtuse, the upper profile evenly curved, its length nearly 3 in body ; depth about 2y2 . Mouth and teeth unknown ; bonesofheadapparentlywithoutspinesorserrations. Vertebraeabout25, small, longer than broad, the spines even ; interneurals short and slender, dilated at base, one or sometimes two between each pair of neurals ; second
interhaemal somewhat enlarged. Dorsal fin low, continuous, scarcely notched, the rays about XIII, 12 or 13; no antrorse spine before first spine; middle spines highest; anal rays about III, 8, the second spine strong and curved, higher than third or than the soft rays ; pectorals narrow ; ventrals thoracic, inserted just behind pectorals. Caudal I, 5, forked, the lobes very long. Scales unknown. |
Measurements
No measurements are available
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| Source: o = order, subp = subphylum | |||||
| References: Kiessling 2004, Hendy et al. 2009, Carroll 1988 | |||||