<human>: Does the sentence "The line following the stem group Sphenacodontia split-off several diverse groups of non-mammalian synapsids—sometimes referred to as mammal-like reptiles—before giving rise to the proto-mammals (Therapsida) in the early Mesozoic era." answer the question "Which early mammalian ancestor produced non-mammalian Dimetroden?"

OPTIONS:
- yes
- no
<bot>: no