Полярные стегозавры не страдали от кариеса

Вымершие динозавры жили лучше, чем мы. Во всяком случае, их не мучил кариес. Это выяснила международная группа палеонтологов, которая исследовала 63 зуба стегозавра – это мощный динозавр с шипами на хвосте.

Как сообщает пресс-служба Санкт-Петербургского госуниверситета, зубы, которые они исследовали, позволили проанализировать, какой образ жизни был у стегозавров. В частности, они жили на одном месте, питались очень твердой едой, из-за чего у них довольно часто менялись зубы. Но при этом кариеса у них не было. Да и вообще у них было более сложное движение челюстей.

Стегозавры жили около 165–125 миллионов лет назад, во время юрского и начала мелового периодов. В длину они достигали пяти-семи метров и имели непропорционально маленькую голову. К слов, зубы у них были при этом маленькие —  около сантиметра.

«Мы нашли зубы разновозрастных животных — как взрослых особей, так и детенышей, — рассказал руководитель исследования Павел Скучас. — Это говорит о том, что полярные стегозавры, скорее всего, вели оседлый образ жизни: размножались и выращивали потомство на одной территории круглый год».



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