Figure 3
From: Competition and extinction explain the evolution of diversity in American automobiles
Plots showing changes over time in net diversification (a) and mean lifespan of car models. (b) Net diversification rate of car models is equal to the origination rate minus the extinction rate with a dotted line indicating a net diversification of 0. The empirical mean lifespan of car models is shown in red while the expected mean lifespan (μ−1) based on our data is provided in navy blue.
