The word Osteocomata is misspelled against Osteocommata, which is plural of "Osteocomma"
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Osteocommata has double "mm" is mispronounced as "m"
Remember double 'MM' in between the strings osteoco & ata which should not be misspelled with single 'M'
Wrong Spelling:  osteoco-m-ata 
Correct Spelling:  osteoco-mm-ata 
Find more incorrect spellings of Osteocommata to spell right way.