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Epitonium (Boreoscala) earlturneri
Taxonomy
Epitonium (Boreoscala) earlturneri was named by Durham (1937). Its type specimen is UCMP 30154 and is a 3D body fossil. Its type locality is UCMP A715, which is in a Bartonian marine horizon in the Coaledo Formation of Oregon.
Sister species lacking formal opinion data
E. expectatum, E. foliaceicostum, E. humphreysi, E. imperiale, E. leroyi, E. multiliniferum, E. muricatum, E. sculptatum, E. paytens, E. gabbi, E. novangliae, E. rushii, E. sericifilum, E. venezuelense, E. emydoneus, E. groenlandica, E. suboptima, E. charitopolos, E. foliaceicostatum, E. foliaceicostum, E. foliaceicostum, E. foliaceiscostatum, E. krebsii, E. replicata
Synonymy list
| Year | Name and author |
|---|---|
| 1937 | Epitonium (Boreoscala) earlturneri Durham p. 493 figs. Plate 56, figure 9 |
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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.
†Epitonium (Boreoscala) earlturneri Durham 1937
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Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| J. W. Durham 1937 | Holotype (incomplete) large, moder- ately heavy; approximately two well- rounded whorls, including body whorl, remain; sutures rather deep; ornamented by 14 to 16 very prominent, rather close set varices that are strongly reflexed posteriorly so that in a cross-section pro- file they are hook-shaped; at the suture varices are reflexed against those of pre- ceding whorl; spirally ornamented by about 14 prominent rounded threads slightly narrower than corresponding interspaces; for a slight distance below suture, in addition, there are several very fine spiral threads; in interspaces be- tween the larger spirals there are three secondary spiral threads of much finer size; near base of the well-rounded body whorl there is a moderately heavy spiral marking the slight angulation of the basal disk; aperture broadly elliptical. |
Measurements
No measurements are available
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| Source: f = family, c = class | |||||
| References: Kiessling 2004, Beu et al. 1990 | |||||