Pentacerotidae, [457], [458], [459], [471]

Pentachogon, [294]

Pentacrinidae, [588], [589], [591] f.

Pentacrinoidea, [595]

Pentacrinus (Isocrinus), [591] f.;

P. asteria, [592];

P. maclearanus, [593]

Pentagonaster, [471];

P. japonicus, [472]

Pentagonasteridae, [455], [471]