different between meiofauna vs mesofauna

English

meiofauna (plural meiofaunas)

(ecology) A type of interstitial fauna, such as psammon, found in rock fissures, between the grains of loose sediments, on algae, etc. It is a part of the microfauna.

meso- +? fauna

mesofauna (plural mesofaunae or mesofaunas)

Any animal of intermediate size, typically invertebrates, such as bivalves, arthropods, insects, and annelids.

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