Table 2.

Fit of models to the zalmoxid log-lineage through time curve. DDL and DDX refer to density-dependent logistic and exponential models, respectively. Boldface text indicates optimal model.

model	no. parameters	ln L	AIC	ΔAIC
pure birth	1	−98.558	199.117	19.983
birth–death	2	−98.558	201.117	21.983
DDL	2	−92.282	188.565	9.431
DDX	2	−91.748	187.495	8.361
Yule-two-rate	3	−89.341	184.683	5.549
Yule-three-rate	5	−84.567	179.134	0
variable speciation	3	−91.711	189.421	10.287
variable extinction	3	−98.942	203.884	24.75