zuwa nassi da ke ƙasa sannan a amsa tambayar daga baya a cikin harshe ɗaya kamar nassi: Nassi: Gano Castorocauda lutrasimilis shine alama ta farko da ke nuna cewa dangi na dabbobi masu shayarwa da suka dace da ruwa kafin dinosaur ya rasa rinjaye shekaru miliyan 66 da suka gabata, yana turawa baya kwanan wata don dangi masu shayarwa da suka dace da salon rayuwa mai ruwa da shekaru miliyan 110. Dangane da burbushin halittu da aka sani a halin yanzu, layin dabbobi masu shayarwa ba zai ga wani nau'in ruwa mai ruwa ba ya samo asali har zuwa Eocene. Saboda an sami ragowar burbushin halittu kaɗan, a baya an yi tunanin cewa, har zuwa iyakar Cretaceous <unk>Paleogene (K<unk>Pg iyaka), dukkan dabbobi masu shayarwa ƙananan dabbobi ne, masu zama a ƙasa ko masu zama a bishiyoyi, dabbobi masu rai na dare irin su shrews, hedgehows, treeshrews, ko tenrecs. Wannan ra'ayi yanzu an gurbata shi ta hanyar dabbobi masu kama da armadillo-like?
an sami 'yan burbushin da aka gano