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Taxonomy
Arca (Barbatia) suzzalloi was named by Weaver and Van Winkle Palmer (1922). Its type specimen is UW (unknown number), a shell, and it is a 3D body fossil. Its type locality is UW 324, which is in a Bartonian marine horizon in the Cowlitz Formation of Washington.
It was recombined as Barbatia (Barbatia) suzzalloi by Reinhart (1943); it was recombined as Barbatia suzzalloi by Hendy (2020).
It was recombined as Barbatia (Barbatia) suzzalloi by Reinhart (1943); it was recombined as Barbatia suzzalloi by Hendy (2020).
Sister species lacking formal opinion data
Synonymy list
| Year | Name and author |
|---|---|
| 1922 | Arca (Barbatia) suzzalloi Weaver and Van Winkle Palmer p. 8 figs. pl. 8, fig. 6 |
| 1943 | Barbatia (Barbatia) suzzalloi Reinhart p. 29 figs. PI. 1, figs. 14-16 |
| 2020 | Barbatia suzzalloi Hendy |
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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.
†Barbatia suzzalloi Weaver and Van Winkle Palmer 1922
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Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| C. E. Weaver and K. Van Winkle Palmer 1922 | Shell small, elongate in outline; inequilateral, beaks situated
one-third the distance from the anterior end ; dorsal margin straight ; anterior end nearly straight, sloping at about an angle of 15 with the dorsal margin, passing into the ventral margin with a broad bow ; ventral margin straight, produced obliquely ; posterior margin broadly pointed at the ventral end, sloping to the dorsal margin at about an angle of 40 ; a mid-umbonal sulcus extends to the ventral margin, sloping obliquely from the beaks ; surface sculptured by concentric lines of growth crossed by numerous fine, delicate, radiating ribs which bifurcate, forming two ribs of equal width on the lower region. The bifurcation of the ribs occurs over the whole of the shell including the posterior as well as the anterior region of concaveness. Under the microscope these ribs show a beaded character, which are most numerous on the anterior, umbonal slope; cardinal area very narrow. |
Measurements
No measurements are available
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| Source: g = genus, f = family | |||||
| References: Mikkelsen and Bieler 2008, Aberhan et al. 2004 | |||||