▁more ▁sou ther ly ▁in ▁latitude ▁than ▁it ▁is ▁today . ▁The ▁prev ail ing ▁climate ▁of ▁the ▁time ▁was ▁semi - ar id , ▁with ▁pron ounced ▁season ality ▁in ▁temperature ▁and ▁ra inf all . ▁Maj ung as aur us ▁inhab ited ▁a ▁coast al ▁flo od ▁plain ▁cut ▁by ▁many ▁sand y ▁river ▁channels . ▁Str ong ▁ge ological ▁evidence ▁suggests ▁the ▁occurrence ▁of ▁periodic ▁de br is ▁flows ▁through ▁these ▁channels ▁at ▁the ▁beginning ▁of ▁the ▁wet ▁season , ▁b ury ing ▁the ▁car c ass es ▁of ▁organ isms ▁killed ▁during ▁the ▁preceding ▁dry ▁season ▁and ▁providing ▁for ▁their ▁exception al ▁pres ervation ▁as ▁foss ils . ▁Sea ▁levels ▁in ▁the ▁area ▁were ▁rising ▁throughout ▁the ▁Ma astr icht ian , ▁and ▁would ▁continue ▁to ▁do ▁so ▁into ▁the ▁Pale oc ene ▁E po ch , ▁so ▁Maj ung as aur us ▁may ▁have ▁ro amed ▁coast al ▁environments ▁like ▁tid al ▁fl ats ▁as ▁well . ▁The ▁neighbor ing ▁Ber ivot ra ▁Form ation ▁represents ▁the ▁contempor aneous ▁marine ▁environment . ▁ ▁Besides ▁Maj ung as aur us , ▁foss il ▁tax a ▁recovered ▁from ▁the ▁Ma e var ano ▁include ▁fish , ▁fro gs , ▁l iz ards , ▁sn akes , ▁seven ▁distinct ▁species ▁of ▁cro c ody l omorph s , ▁five ▁or ▁six ▁species ▁of ▁m amm als , ▁Vor ona ▁and ▁several ▁other ▁birds , ▁the ▁possibly ▁flight ed ▁d rom ae osa ur id ▁Rah on av is , ▁the ▁no