Menarana
... that the Late Cretaceous madtsoiid snake Menarana had several adaptations for head-first burrowing, but its large size may have made burrowing difficult or impossible?
... that the <a href="./Late_Cretaceous" id="mwD0w" rel="mw:WikiLink" title="Late Cretaceous">Late Cretaceous</a> <a href="./Madtsoiidae" id="mwD00" rel="mw:WikiLink" title="Madtsoiidae">madtsoiid</a> <a href="./Snake" id="mwD04" rel="mw:WikiLink" title="Snake">snake</a> <i id="mwD08"><b id="mwD1A"><a href="./Menarana" id="mwD1E" rel="mw:WikiLink" title="Menarana">Menarana</a></b></i> had several adaptations for head-first <a href="./Fossorial" id="mwD1I" rel="mw:WikiLink" title="Fossorial">burrowing</a>, but its large size may have made burrowing difficult or impossible?