Table 3 . Biogeographical event frequencies.

Time slice	Vicariance	Sympatry	Extinction	Dispersal
Total data	7–10	72–75 (gtr p = 0)	6–12	20–23 (ltr p < 0.029 in one of the four area cladograms)
Late Triassic–Late Jurassic	2	31 (gtr p < 0.0026)	1	8
Middle and Late Jurassic	4–5	18 (gtr p < 0.026–0.028)	2–4	3–4
Late Jurassic	2	13	1	1
Late Jurassic–Early Cretaceous	2–8 (ltr p < 0.0078)	53–55 (gtr p = 0)	0–14 (ltr p < 0.012)	9–16 (ltr p < 0.048)
Early Cretaceous	1–2 (ltr p < 0.036)	37 (gtr p < 0.0018–0.00019)	0–2 (ltr p < 0.031)	8–9
Cretaceous	4–6	38–41 (gtr p = 0–0.0002)	4–14	6–11 (ltr p < 0.03 in one of the three area cladograms)

Notes: All calculations were carried out using SCs and 10,000 pterm randomisations. Only statistically significant p-values are listed. p-Values marked with ‘gtr’ indicate an event type that occurs more often than expected from random data, and those marked with ‘ltr’ indicate event types that occur less often than expected from random data.