Description
With agglommerate on flask-, bowl - or chalice- shaped lorica ; collar not clear, if present may or may not have nuchal constriction ; 26 genera. b ?fl 1. Agglommerate of mineral particles; collar ( if present) with slight nuchal constriction .......... .. . . . . . . . . . . . . . . .. . . . . . . . . . . . . . .. . . . . . . . . . . . . . 1'. Agglommerate often of coccoliths .... ......... .... .... .. 2 2. Lorica , flask- or bowl-shaped ; with distinct constriction in collar .. .. .... .. ..... ......... ........... .... .. 3 2'. Lorica , chalice-shaped ; without distinct constriction in collar ... ................. .. .... Poroecus 3. Collar slightly flared or with ridged rings ......... .. . . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . 3' . Collar around clear inner suboral cone .. .... .. .... .. .. . . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. .
Type species
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Raw text
With agglommerate on flask-, bowl - or chalice- shaped lorica ; collar not clear, if present may or may not have nuchal constriction ; 26 genera. b ?fl 1. Agglommerate of mineral particles; collar ( if present) with slight nuchal constriction .......... .. . . . . . . . . . . . . . . .. . . . . . . . . . . . . . .. . . . . . . . . . . . . . 1'. Agglommerate often of coccoliths .... ......... .... .... .. 2 2. Lorica , flask- or bowl-shaped ; with distinct constriction in collar .. .. .... .. ..... ......... ........... .... .. 3 2'. Lorica , chalice-shaped ; without distinct constriction in collar ... ................. .. .... Poroecus 3. Collar slightly flared or with ridged rings ......... .. . . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . 3' . Collar around clear inner suboral cone .. .... .. .... .. .. . . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. .