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Contraspina purdoni
Taxonomy
Productus purdoni was named by Davidson (1862).
It was recombined as Productus (Waagenoconcha) purdoni by Chao (1931); it was recombined as Productus (Ruthenia) purdoni by Reed (1944); it was recombined as Waagenoconcha purdoni by Waterhouse (1966), Zhang and Jin (1976) and Shimizu (1981); it was recombined as Contraspina purdoni by Waterhouse (2002).
It was recombined as Productus (Waagenoconcha) purdoni by Chao (1931); it was recombined as Productus (Ruthenia) purdoni by Reed (1944); it was recombined as Waagenoconcha purdoni by Waterhouse (1966), Zhang and Jin (1976) and Shimizu (1981); it was recombined as Contraspina purdoni by Waterhouse (2002).
Synonymy list
Year | Name and author |
---|---|
1862 | Productus purdoni Davidson p. 31 figs. Pl 2, fig 5 |
1865 | Productus purdoni Salter figs. Pl 5, fig 10 |
1884 | Productus purdoni Waagen p. 705 figs. Pl 73, figs 1-3 |
1897 | Productus purdoni Diener p. 21 figs. Pl 2, figs 1,2 |
1915 | Productus purdoni Diener p. 75 figs. Pl 8, figs 4,5 |
1931 | Productus (Waagenoconcha) purdoni Chao p. 297 figs. Pl 29, fig 4 |
1944 | Productus (Ruthenia) purdoni Reed p. 59 figs. Pl 11, fig 4; pl 14, figs 3-5 |
1966 | Waagenoconcha purdoni Waterhouse p. 23 figs. Pl 4, figs 2,3; pl 5, figs 2,3 |
1976 | Waagenoconcha purdoni Zhang and Jin p. 176 figs. Pl 5, figs 1-3,5,6 |
1981 | Waagenoconcha purdoni Shimizu p. 74 figs. Pl 8, figs 12-14 |
2002 | Contraspina purdoni Waterhouse |
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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.
†Contraspina purdoni Davidson 1862
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Diagnosis
Reference | Diagnosis | |
---|---|---|
J. B. Waterhouse 1966 | Large Waagenoconcha with moderately prominent little incurved massive ventral umbo, gently rounded shoulders and moderately deep sulcus; dorsal valve flat with low fold, spines with short elongated narrow bases. |