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Ammobaculites filiformis
Taxonomy
Ammobaculites filiformis was named by Earland (1934) [Ammobaculites agglutinans var. filiformis (Earland, 1934)]. It is extant. It is considered to be a form taxon. Its type specimen is Yes, a test.
Sister species lacking formal opinion data
Synonymy list
| Year | Name and author |
|---|---|
| 1934 | Ammobaculites filiformis Earland p. 92 figs. 11-13 |
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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.
Ammobaculites filiformis Earland 1934
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Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| A. Earland 1934 | The variety agrees with the type species in practically all respects except its minute size, and was described and figured, under the specific name only in the South Georgia report (SG116). But its occurrence in company with the typical species at ten stations, without specimens of intermediate size connecting the two forms, and still more its occurrence at seven other stations where the type species was not found at all, have decided me to give it a varietal name (Ammobaculites agglutinans var. filiformis). It is frequent at Sts. 360, WS 471, 472, 516, but rare elsewhere. Most of the records are in deep water. |