Does the sentence "The line following the stem group Sphenacodontia split-off several diverse groups of non-mammalian synapsidssometimes referred to as mammal-like reptilesbefore giving rise to the proto-mammals (Therapsida) in the early Mesozoic era." answer the question "Which early mammalian ancestor produced non-mammalian Dimetroden?"

Options are: 1. yes 2. no
2.