ac anth ▁Lat imer ia . ▁ ▁F oss ils ▁of ▁Mac rop oma ▁have ▁been ▁found ▁in ▁both ▁England ▁and ▁Czech ▁republic . ▁Record ed ▁foss ils ▁have ▁bodies ▁under ▁two ▁feet ▁in ▁length . ▁A ▁modern ▁co el ac anth ▁measures ▁five ▁or ▁more , ▁but ▁in ▁other ▁respect s ▁the ▁two ▁gener a ▁are ▁remark ably ▁similar , ▁and ▁share ▁the ▁same ▁body ▁plan ▁with ▁a ▁three - lob ed ▁tail ▁and ▁st alk ed ▁fins . ▁ ▁Mac rop oma ▁grew ▁to ▁a ▁length ▁of ▁ 2 2   in ches ▁( 5 5 ▁cent im eters ) ▁and ▁would ▁have ▁pre yed ▁upon ▁smaller ▁aqu atic ▁species . ▁ ▁References ▁▁ ▁Barry ▁C ox , ▁Col in ▁Harrison , ▁R . J . G . ▁Sav age , ▁and ▁Brian ▁Gard iner . ▁( 1 9 9 9 ): ▁The ▁Simon ▁& ▁Sch uster ▁Encyclopedia ▁of ▁Din osa urs ▁and ▁Pre histor ic ▁Cre atures : ▁A ▁Visual ▁Who ' s ▁Who ▁of ▁Pre histor ic ▁Life . ▁Simon ▁& ▁Sch uster . ▁▁ ▁David ▁Norman . ▁( 2 0 0 1 ): ▁The ▁Big ▁Book ▁Of ▁Din osa urs . ▁ ▁page ▁ 6 1 , ▁Wal come ▁books . ▁ ▁Parker , ▁Steve . ▁Din osa urus : ▁the ▁complete ▁guide ▁to ▁din osa urs . ▁Fire fly ▁Books ▁Inc , ▁ 2 0 0 3 . ▁P g . ▁ 6 9 ▁ ▁Category : Pre histor ic ▁lo be - f inned ▁fish ▁gener