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Lophocorys norvegiensis Bjørklund and Kellogg, 1972

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Shell divided into three segments. Cephalis small, hemispherical, thick-walled, bearing two stout three-bladed horns, an apical horn, and a vertical horn in a lateral-oblique position. Cephalic pores small, circular, deep-set. Collar stricture indistinct. Thorax campanulate, thick-walled, rough-surfaced, with circular to elliptical pores somewhat larger than cephalic pores and deeply set in hexagonal frames. In some indivuduals, the thorax bears a thin dorsal spine. Lumbar stricture a distinct ring perforated by pores similar to those in thorax. Abdomen smooth, thin-walled, tapering toward the open mouth, often found broken. Proximally, abdomen studded with small, irregularly placed, shallow-set pores; distally, hyaline in appearance.
Dimensions of holotype: Length of cephalis, thorax and lumbar ring 143 microns. Width of thorax at widest point 129 microns. Width at lumbar stricture 114 microns. Width of abdomen at mouth 71 microns. Abdomen and horns slightly broken.
Dimensions of other specimens:
Length of cephalis, thorax and lumbar ring 100-170 microns. Width of thorax at widest point 92-160 microns. Width at lumbar stricture 50-130 microns. Width of abdomen at mouth 40-80 microns. Diameter of thoracic pores 6-9 microns. Diameter of abdominal pores 3-5 microns. Length of apical horn 35-100 microns. Length of vertical horn 20-40 microns.
Bjørklund and Kellogg 1972


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