Conus goodwini (Hanna, 1927)
Descrizione e caratteristiche:
Shell small; coniform; consists of eight and
one-half whorls, three of which are embryonic; embryonic whorls apparently
smooth; surface above angle of adult whorls slightly concave, ornamented by
growth lines and four or five distinct, equal sized, rounded spiral threads
which are separated by narrow interspaces; just below and extending to the
angle of the whorl are elevated nearly rectangular nodes one and one-half times
as long as wide, separated by interspaces one-half the width* of the nodes,
interspaces are not depressed below the general surface of the shell below the
angle; suture of succeeding whorls extends only to the base of the nodes of the
preceding whorl; remainder of the shell below the angle polished, but with
suggestions of spiral striations; lower
part of the whorl crossed by eleven to twelve rounded threads which are
separated by narrow interspaces; aperture coniform. The number of nodes to the
whorl varies. The last whorl bears 31; next 26; 24; 20; 16; with a few
remaining to the embryonic shell.
Dimensions: Length 11
mm., diameter 5 mm.
In general
characteristics this form most closely resembles Conus
aegilops Anderson
and Hanna.1" The spire of the Tejon species is higher. The
surface above the angle lacks spiral ornamentation, and the surface below the
angle is more prominently striated.
Named in honor of Mr. Harold W. Goodwin, a
college roommate.
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Plate
55 figs. 5, 8 Univer.
Calif. Plesiotype 30960 Eocene |
Conus aegilops (1)
Plate 13 fig. 5: Type 809 Plate 13 Fig. 6: Type 810 |
Bibliografia Consultata