Title
Notes on shell morphology and classification of the Siliquariidae (Gastropoda) : the protoconch and slit of Siliquaria squamata Blainville
Title Variants
Alternative:
Protoconch and slit of Siliquaria squamata Blainville
Related Titles
Series:
American Museum novitates, no. 2263
By
Gould, Stephen Jay.
Type
Book
Material
Published material
Publication info
New York, N.Y, American Museum of Natural History, [1966]
Notes
Title from caption.
"August 18, 1966."
"More than 100 individuals of the curious slit worm-snail Siliquaria squamata Blainville were found embedded in a single sponge dredged from a depth of 300-400 fathoms in waters southeast of St. David's Light, Bermuda, on July 12, 1964."
"Siliquaria, described for the first time, is 0.25 mm. wide, helically coiled, and has a sinuous aperture, whereas that of the other two siliquariid genera is 1 mm. wide and planispiral, with a circular aperture. Protoconch form can no longer be used as the chief diagnostic familial characteristic as proposed by Morton (1951). The siliquariid slit is analogous in form, but not in function, to the selenizone of slit-bearing archaeogastropods. Since the siliquariid slit is much longer than that of archaeogastropods, the morphology of slit healing differs. To prevent lateral filling of the slit by growth increments running longitudinally along the slit toward the slit-healing lamina, such increments are either not deposited or else run underneath, rather than in the same surface, as in their predecessors"--P. 11-12.
Subjects
59.4.32S
,
Bermuda Islands
,
Gastropoda
,
Mollusks
,
Saint David's Island
,
Siliquaria squamata
,
Siliquariidae
Call Number
QL1 .A436 no.2263 1966
Language
English
Identifiers
OCLC:
31837703
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