Endothermy is actually a synapomorphy on the Mammalia, although it could have arisen in a very (now extinct) synapsid ancestor; the fossil document does not distinguish these options. Convergent in birds. Marbled polecats have a singular coat that distinguishes it from its kinfolk, striped polecats, which are black with white https://johnathanuurnj.jts-blog.com/35527114/how-grúas-industriales-para-trabajos-en-la-rinconada-can-save-you-time-stress-and-money