A family classification in paleontology that includes agelacrinites and related stemless or nearly-stemless crinoids from the Paleozoic era.
From the genus name 'agelacrinites' plus the family suffix '-idae' (Latin plural, used in Linnaean taxonomy to denote family-level classifications). Standard zoological nomenclature following Latin binomial conventions.
The '-idae' suffix is biology's special family name generator—if you've got a group you want to rank officially in taxonomy, just add '-idae' and suddenly it's a scientific family, which is why there are so many words ending in this suffix!
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