Protozoa - Nassellaria - Williriedellidae
Original description: Shell of four segments, pyriform. Cephalis spherical; thorax and abdomen truncate conical. The proximal three segments form a conical proximal part. The fourth segment large, subspherical without aperture. Collar and lumber strictures indistinct externally. Joint between abdomen and fourth segment marked by rapid change in contour from the conical proximal part to spherical distal part. Pores circular to subcircular, densely spaced and set in polygonal (largely hexagonal) pore frames. Pores around distal end slightly larger than those on the rest of shell and surrounded by rims. Small nodes situated at the pore frame vertices in some specimens.
Original remarks: This species is compared to Minocapsa cylindrica, n. sp. under the latter species.
Etymology: The specific name is derived from the Latin globosus-a-um (spherical).
Full reference: A. Matsuoka. 1991. Early Jurassic Radiolarians from the Nanjo Massif in the Mino Terrane, central Japan. Part 1. Tricolocapsa, Stichocapsa, and Minocapsa, n. gen. Transactions and Proceedings of the Paleontological Society of Japan, N.S. 161:720-738
Belongs to Minocapsa according to A. Matsuoka 1991
Sister taxa: Minocapsa cylindrica, Minocapsa megaglobosa
Type specimen: NU MR 0044. Its type locality is Mino Terrane, Nanjo Massif, Imajo Unit, sample MNA-10, which is in a Toarcian basinal (siliceous) mudstone in Japan.
Ecology: passively mobile planktonic omnivore
Distribution:
• Jurassic of Japan (2 collections)
Total: 2 collections each including a single occurrence
Specimen images are retrieved through the ePANDDA API.
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