Table 1. Temporal and geographic distribution of three subfamilies, 15 genera, and 23 species of Eocene Basilosauridae.

Genus and species	Species author, year, and page	Holotype	Age	Type locality	North latitude	East longitude
Basilosaurinae
Basilosaurus cetoides	Owen, 1841: 69 [11]	ANSP 12944A	Priabonian	Ouachita River, Louisiana, U.S.A.	31.92800	−91.94000
Basilosaurus isis	Beadnell in Andrews, 1904: 214 [12]	CGM 10208	Priabonian	Birket Qarun, Fayum, Egypt	29.47200	30.35900
Eocetus schweinfurthi	Fraas, 1904: 217 [13]	SMNS 10986	Bartonian	Gebel Mokattam, Cairo, Egypt	30.02200	31.27300
Eocetus drazindai	Gingerich et al., 1997: 57 [14]	GSP-UM 3193	Bartonian	Bari Nadi, Punjab, Pakistan	30.78283	70.42783
Basiloterus hussaini	Gingerich et al., 1997: 62 [14]	GSP-UM 3190	Bartonian	Bari Nadi, Punjab, Pakistan	30.78783	70.44050
Dorudontinae
Dorudon serratus	Gibbes, 1845: 254 [15]	MCZ 8763	Priabonian	Santee Canal, S. Carolina, U.S.A.	33.26500	−79.96000
Zygorhiza kochii	Reichenbach, 1847: 13 [16]	MNB Ma-43248	Priabonian	Uncertain, Alabama, U.S.A.	31.68960	−88.28170
Pontogeneus brachyspondylus	Müller, 1849: 26 [17]	MNB unknown	Priabonian	Uncertain, Alabama, U.S.A.	31.68960	−88.28170
Saghacetus osiris	Dames, 1894: 204 [18]	MNB 28388	Priabonian	Garet el-Esh, Fayum, Egypt	29.57100	30.56500
Dorudon atrox	Andrews, 1906: 255 [19]	CGM 9319	Priabonian	12 km WSW Garet Gehannam, Egypt	29.27300	30.03100
Ancalacetus simonsi	Gingerich and Uhen, 1996: 363 [20]	CGM 42290	Priabonian	Wadi Al Hitan WH-81, Fayum, Egypt	29.27374	30.02344
Chrysocetus healyorum	Uhen and Gingerich, 2001: 3 [21]	SCSM 87.195	Priabonian	Santee Quarry, Holly Hill, S. Carolina, U.S.	33.27800	-80.42300
Stromerius nidensis	Gingerich, 2007: 366 [22]	UM 100140	Priabonian	Garet el-Esh, Fayum, Egypt	29.57195	30.56637
Masracetus markgrafi	Gingerich, 2007: 375 [22]	SMNS 11414	Priabonian	Dimeh, Fayum, Egypt	29.53600	30.66900
Pontogeneus peruvianus	Martínez and Muizon, 2011: 518 [5]	MNHN.F.PRU 10	Priabonian	Paracas Bay, Ica, Peru	−13.88175	−76.23706
Supayacetus muizoni	Uhen et al., 2011: 960 [23]	MUSM 1465	Bartonian	AV-17, Ica, Peru	−14.66678	−75.63515
Ocucajea picklingi	Uhen et al., 2011: 963 [23]	MUSM 1442	Bartonian	AV-19, Ica, Peru	−14.66830	−75.63505
Chrysocetus fouadassii	Gingerich and Zouhri, 2015: 278 [24]	FASC Bouj-1	Bartonian	Sabkha de Gueran, Boujdour, Morocco	25.12000	−13.89000
Pachycetinae
Pachycetus paulsonii	Brandt, 1873: 336 [25]	Lost	Bartonian	Chyhyryn, Cherkasy, Ukraine	49.07300	32.66200
Pachycetus wardii	Uhen, 1999: 514 [26]	USNM 310633	Bartonian	Lanier Quarry, Maple Hill, N. Carolina, U.S.	34.62500	−77.67500
Antaecetus aithai	Gingerich and Zouhri, 2015: 280 [24]	FASC Bouj-6	Bartonian	Sabkha de Gueran, Boujdour, Morocco	25.07667	−13.90763
Subfamily incertae sedis
’Zeuglodon’ wanklyni	Seeley, 1876: 428 [27]	Lost	Bartonian	Barton Cliff, England, U.K.	50.74280	−1.65520
’Pachycetus’ humilis	Van Beneden, 1883: 33 [28]	MMGD NsT-94	Bartonian	Helmstedt, Niedersachsen, Germany	52.22900	11.01000