CATALOG OF ORIGINAL DESCRIPTIONS: Lychnocanium grande Campbell & Clark 1944
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Lychnocanium (Lychnocanella) grande Campbell and Clark 1944.jpg
Lychnocanium grande
Citation: Lychnocanium grande Campbell & Clark 1944Taxonomic rank: speciesDescribed on page(s) : p.42Type specimens: pl.6, figs.3, 4, 6Type repository: University of California, Museum of Paleontology, San FranciscoFamily (traditional): TheoperidaeFamily (modern): Lychnocaniidae
Original Description Shell large; apical horn short (less than 0.1 length of foot), rodlike, subvertical, distally sharp; cephalis broadly conical (60°), its length about same as apical horn, its basal diameter (shell-neck) 1.4 its own length, and its sides very strongly convex, forming a pointed apex from which horn arises; thorax as a whole subconical (50°), its length about 0.5 that of foot, its lower diameter approximately at level of origin of feet 0.58 maximum diameter, and latter 0.9 length of foot; wide open mouth has a circular, transverse rib, and a flat plate of pore-bearing shell material surrounds it, a continuation from sides of thorax, lateral walls of which are pronouncedly convex; from wide level of shell just above flat, oral plate arise three divergent, nearly straight, three-bladed, apically sharp, basally thick feet; wall of cephalis thinner than that of thorax; surface generally smooth but with vertical, very short, branched, twiglike spines around shell at level of origin of feet; pores of cephalis large, shallow, sub-circular, uniform, and with a narrow basketlike framework, pores of thorax mostly subcircular to elliptical, exceptionally otherwise, 9-10 in a vertical tier and graded in size from largest near lower sides to smallest near shell-neck, about 44 or more around circumference in row near level of origin of feet and fewer above, feet and horn hyaline. Size: Length, total, 250µm, of horn, 15µm, of feet, 180µm; diameter of maximum, 170, of aperture, 50µm, of thoracic pores, about 15.4µm. Etymology: No information given, but: Latin "grandis" (-is, e) = large Extra details from original publication Distinguishing characters:Lychnocanium grande n. sp. resembles sigmopodium (Haeckel, 1887) most closely but has a shorter horn, less distinct and smaller cephalis, less-pronounced cervical stricture, larger pores, and shorter legs It does not resemble closely favosum (Haeckel, 1887) and forticeps (Haeckel, 1887) species,which, however, are related to it. Editors' Notes [Campbell and Clark here lists the species under the subgeneric name Lychnocanella and include the subgeneric name in the species name.
References:
Campbell, A. S. & Clark, B. L. (1944). Miocene radiolarian faunas from southern California. Geological Society of America, Special Papers. 51: 1-76. gs
Lychnocanium grande compiled by the radiolaria@mikrotax project teamviewed: 15-8-2026
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 grande Campbell and Clark 1944.jpg)
Lychnocanium (Lychnocanella) grande Campbell and Clark 1944.jpg grande Campbell and Clark 1944.jpg)
Lychnocanium (Lychnocanella) grande Campbell and Clark 1944.jpg
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