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Streblochondria mutata
Taxonomy
Streblochondria mutata was named by Hoare (1993) [= Streblochondria sp. Gordon & Henry 1981 pl. 4 f. 17-18]. Its type specimen is USNM 459156, a shell, and it is a 3D body fossil.
Sister species lacking formal opinion data
Synonymy list
| Year | Name and author |
|---|---|
| 1993 | Streblochondria mutata Hoare p. 385 figs. 5.2 – 5.8 |
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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.
†Streblochondria mutata Hoare 1993
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Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| R. D. Hoare 1993 | Streblochondria with valves higher than long; auricles, with the exception of the posterior auricle on the right valve, costate; body costae closely spaced, somewhat irregular, beginning near midheight.
Streblochondria of medium size, higher than long; slightly opisthocline, prosocline in early growth stages; hingeline shorter than length; left valve more convex than right valve; posterior auricle set off by steep umbonal slope, margin sulcate, surface with 5-6 low costae; anterior auricle set off by deep groove, surface with eight narrow costae, some of which bifurcate; anterior valve margin gently convex, extending anteriorly to hingeline; body ornamented with numerous closely spaced (4-5 in 2 mm), somewhat irregular costae originating about midheight; right valve with deep byssal notch separating large anterior auricle with 5-7 costae crossed by closely spaced growth lines; small posterior auricle smooth, not distinctly set off from body; surface of body with numerous closely spaced costae crossed by fine growth lines. |