高圓球蟲（學名：），又名凸圓球蟲，是生存於中奧陶紀至晚志留紀的一屬三葉蟲，生活在淺海礁石間，其化石分佈於亞洲、澳洲、歐洲及北美洲。這類三葉蟲的外骨骼很長且呈凸狀，有厚實的方解石外殼。其扁平的頭鞍佔據了整個寬闊的頭部，頰刺退化。胸部分為11節，中軸隆起而凸出，肋葉的末梢多刺且向下彎曲。短小的尾甲也長有刺。和本屬相似且相關的屬為假高圓球蟲（Pseudosphaerexochus）。
物種
- Sphaerexochus arenosis Chatterton and Ludvigsen 1977
- Sphaerexochus arenosus Chatterton and Ludvigsen 1976
- Sphaerexochus atacius Ludvigsen 1979
- Sphaerexochus brandlyi Chatterton and Perry 1984
- Sphaerexochus bridgei Cooper and Kindle 1936
- Sphaerexochus britanicus Dean 1971
- Sphaerexochus calvus Mc Coy 1846
- Sphaerexochus dimorphus Whittington and Evitt 1953
- Sphaerexochus eurys Tripp 1962
- Sphaerexochus fibrisulcatus Lu 1975
- Sphaerexochus glaber Holloway 1980
- Sphaerexochus hapsidotus Whittington and Evitt 1953
- Sphaerexochus hiratai Kobayashi and Hamada 1964
- Sphaerexochus hisingeri Warburg 1925
- Sphaerexochus johnstoni Chatterton and Perry 1984
- Sphaerexochus laciniatus Lindström 1885
- Sphaerexochus latifrons Angelin 1854
- Sphaerexochus mirus Beyrich, 1845
- Sphaerexochus molongloensis Chatterton and Campbell 1980
- Sphaerexochus parvus Billings 1865
- Sphaerexochus pulcher Whittington and Evitt 1953
- Sphaerexochus romingeri Hall 1868
- Sphaerexochus scabridus Angelin 1854
- Sphaerexochus tuberculatus Warburg 1925
- Sphaerexochus valcourensis Shaw and Bolton 2011
參考文獻
外部連結
- [http://paleodb.org/cgi-bin/bridge.pl?action=checkTaxonInfo&taxon_no=21779 Sphaerexochus] in the Paleobiology Database
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