Duba zuwa sashi na ƙasa sannan ka amsa tambayar daga baya a cikin harshe ɗaya kamar yadda sashi: Passage: Bradysaurus shine kawai memba na subfamily Bradysaurinae. Shi ne mafi asali da aka sani na pareiasaur kuma ana iya la'akari da kyakkyawan nau'in kakannin da wasu suka samo asali. Babban girmansa ya nuna cewa, har ma da wuri a cikin tarihin juyin halittar su, waɗannan dabbobi masu ban mamaki sun riga sun kai girman da ya dace. Ko da daga baya, siffofin da suka ci gaba, kamar Scutosaurus, ba su da wata babbar fa'ida. Girman girman ya kasance don samar da kariya daga masu farauta da kuma kula da yanayin zafin jiki mai ɗorewa (gigantothermy). Tambaya: Yaushe dabbobi suka kai girman da ya dace?
a farkon tarihin juyin halittarsu