Anaeroplasmatales is an order of mollicute bacteria which are generally found in the rumens of cattle and sheep.

Members of the order Anaeroplasmatales can appear as different shapes at different times in their lifecycles.

They do grow at a temperature of 37 °C on microbiological media, where they form irregular-shaped colonies with a "fried-egg" appearance, similar to other mycoplasmas.

[1] The currently accepted taxonomy is based on the List of Prokaryotic names with Standing in Nomenclature (LPSN)[2] and National Center for Biotechnology Information (NCBI)[3] Mycoplasma feliminutum Heyward, Sabry & Dowdle 1969 Haploplasma Watanabe et al. 2021 Mariniplasma corrig.

Avacholeplasma" Gilroy et al. 2021] Paracholeplasma Mariniplasma Haploplasma Acholeplasma Alteracholeplasma "Ca.