“Specifically, these little shrew-like animals, despite appearances, probably lived and died more like reptiles, with a long growth trajectory through childhood to maturity, and then a much longer lifespan than the live fast, die young approach of today’s small mammals”

https://www.theguardian.com/science/article/2024/jul/24/early-mammal-could-help-answer-one-of-biologys-biggest-question-say-experts