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Radiolaria - Nassellaria - Hsuidae
Original description: Test conical, lobate, pointed apically, usually with six to seven post-abdominal chambers. Cephail small, conical, without rudimentary horn. Cephalis and thorax covered with layer of microgranular silica. Abdomen and post-abdominal chambers rapidly increasing in width, gradually increasing in length as added. Post-abdominal chambers with inner layer of massive tetragonal pore frames with small circular pores: outer layer of mesh work with short, moderately massive costae. Costae mostly occurring on joints of chambers.
Original remarks: Hsuum() lucidum n. sp differs from H. parasolensi Pessagno and Whalen by lacking a horn on cephalis, and by having a more conical test with less massive costae.
Etymology: Lucidus-a-um (Latin, adj.) bright.
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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.