Dallinella obsoleta (Dall, 1891)
Type locality: "dredged by the U. S. Steamer Albatross, in 113 fathoms, at Station 2984, off Cerros Island, Lower California" Depth range: 80 - 207 m.
Waldheimia kennedyi Dall, 1874
Terebratella occidentalis Dall, 1871: see below...
Terebratella occidentalis var. obsoleta Dall,1891
Terebratalia obsoleta Dall, 1893
Terebratalia obsoleta : Beecher (1895)
Dallinella obsoleta : Thomson(1915)
Terebratalia occidentalis (Dall, 1920)
Terebratalia arnoldi Hertlein and Grant, 1944
Miogryphus wiletti Hertlein and Grant, 1944
Diagnosis - original from Dall (1891)
Shell more rounded than the original type with the sharp radiating
ribs and sulci obsolete and represented chietiy by the brilliant scarlet
lines of color which in the type surmount the ribs.
Color: reddish (Dall, 1891; Helmcke, 1939).
In Wells et al. (1983) "it is suggested that populations of deep water brachiopods such as Terebratulia transversa, Dallinella obsoleta and Terebratulina unguicula may be threatened off southern California by pollution and by accidental killing in other dredging opérations."
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Beecher (1895) wrote "the material for this work has kindly been furnished by Dr. William Dall of Washington. The specimens were dredged by the U. S. Steamer Albatross, in 113 fathoms, at Station 2984, off Cerros Island, Lower California. In a report on some shells from this expedition, by Dr. Dall, this brachiopod was described as Terebratella occidentalis var. obsoleta. Subsequent study, however, has led him to consider it as a distinct species under T. obsoleta (Plate II, figures 6-9), and this determination is here adopted." adding "In the previous paper it was stated that Terebratalia obsoleta was morphically equivalent to Terebratella dorsata,..."
Thomson (1915) stated "this was the more unfortunate, as the actual species on which he established a different ontogenetic series from that of Terebratella, s.str., was Terebratella obsoleta, Dall, which is a dorsally uniplicate form." Thus he created a new genus Dallinella, with, Terebratella obsoleta, Dall, as type species. And, he pointed out : "I further desire to define the genotype as the species actually figured by Beecher under the name of T. obsoleta, Dall."
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