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Cydas

Gastropoda - Neogastropoda - Perissityidae

Taxonomy
Cydas was named by Saul and Popenoe (1993). Its type is Volutoderma crossi.

It was assigned to Perissityidae by Saul and Popenoe (1993).

Species
C. crossi

Synonymy list
YearName and author
1993Cydas Saul and Popenoe p. 360

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RankNameAuthor
kingdomAnimalia()
—Bilateria
—EubilateriaAx 1987
—Protostomia
—Spiralia
superphylumLophotrochozoa
phylumMollusca
classGastropoda
RankNameAuthor
subclassCaenogastropoda(Cox 1959)
—Sorbeoconcha(Ponder and Lindberg 1997)
—Hypsogastropoda(Ponder and Lindberg 1997)
superorderLatrogastropodaRiedel 2000
orderNeogastropodaThiele 1929
superfamilyBuccinaceae(Rafinesque 1815)
familyPerissityidae
genusCydas

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.

G. †Cydas Saul and Popenoe 1993
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†Cydas crossi Anderson 1958
Diagnosis
ReferenceDiagnosis
L. R. Saul and W. P. Popenoe 1993Medium-sized, fusiform perissityids with a sloping shoulder, broadly rounded periphery, and short anterior siphonal neck that has near its anterior end a well-developed siphonal fasciole. Whorls ornamented by rounded axial ribs on posterior half of whorls over-ridden by flat-topped spiral cords. Outer lip expanded to form a rim and having a posterior, four medial, and an anterior denticle within, the central two medial denticles stronger; lip notched posteriorly at the shoulder between posterior and adapical medial denticles. Aperture elongate, narrow, sharply angled and constricted posteriorly. Parietal lip narrow and thin with one or two posterior denticles co- inciding with spiral cords, two pseudofolds on columella just anterior to base of whorl; inner lip broader and thicker on columella, wrapped over to form a pseudoumbilicus anterior to fasciole.
Measurements
No measurements are available
Composition: aragonitec
Locomotion: actively mobileo
Life habit: epifaunalo
Diet: carnivoreo
Vision: limitedc
Created: 2004-02-29 11:41:42
Modified: 2009-09-10 10:56:35
Source: o = order, c = class
Reference: Kiessling 2004

Age range: Late/Upper Turonian or 93.50000 to 89.30000 Ma

Collections: one only


Time interval Ma Country or state Original ID and collection number
Late/Upper Turonian93.5 - 89.3USA (California) C. crossi (215288)