radiolaria - rads_cat - Clathrocyclas bicornis radiolaria - rads_cat - Clathrocyclas bicornis

CATALOG OF ORIGINAL DESCRIPTIONS: Clathrocyclas bicornis Hays 1965

This page provides data from the catalog of type descriptions. The catalog is sorted alphabetically. Use the current identification link to go back to the main database.


Higher levels: rads_cat -> C -> Clathrocyclas -> Clathrocyclas bicornis
Other pages this level: C. alcmenae, C. aurelia, C. australis, C. basilea, C. bicornis, C. cabrilloensis, C. cassiopeiae, C. collaris, C. coscinodiscus, C. danaes, C. diceros, C. europae, C. humerus, C. jonis, C. latonae, C. lipmanae, C. pirum, C. principessa, C. semeles, C. transitiva> >>

Clathrocyclas bicornis

Citation: Clathrocyclas bicornis Hays 1965
taxonomic rank: species
Described on page(s) : p. 179, pl. 3, fig. 3
Type age (chronostrat): Pliocene
Family (traditional): Theoperidae

Current identification:


Original Description

Shell campanulate, divided into three segments, development of third segment variable, surface rough. Cephalis hemispherical, bearing two stout three-bladed spines, one approximately apical, as much as 3 times as long as cephalis, the other lateral oblique. Cephalis thick-walled with small circular pores scattered over its surface. Collar stricture indistinct. Thorax campanulate, wall thick, pores circular, deeply set in thick wall bounded by hexagonal frames, 3 to 4 times diameter of cephalic pores. Pores increase in size distally, arranged in four to five transverse rows. Mouth open but slightly constricted by internal septal ring. Below septal ring occurs a fringe consisting of one or more rows of circular pores, which can be considered an abdomen. Abdomen highly variable and frequently missing.

Size:
Length of apical horn 15-40, of cephalis 15-30, of thorax 80-150; width of cephalis 20-37, of thorax 115-140.

Extra details from original publication
Type material: Description based on 60 specimens from cores V-16-57,880cm; V-16-59,880cm;V-18-69,960cm; V-16-116,640 and 680cm.

References:

Hays, J. D. (1965). Radiolaria and late Tertiary and Quaternary history of AntarcticSeas. American Geophysical Union, Antarctic Research Series 5, Llano, G. A.. 125-184. gs


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Clathrocyclas bicornis compiled by the radiolaria@mikrotax project team viewed: 7-12-2024

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