+----------------+------------------------------------------+-------------+ | | Genera which are found | Number of | | | | Species. | | +------+-------+------+------+------+------+------+------+ |NAMES OF GENERA.|Living|Living,|Fossil|In the|In the|In the|In the|In the| | |only. |and in |only. |Strata|Strata|Strata|Living|Fossil| | | | the | |ante- |of the|post- |State.|State.| | | |Fossil | |rior |Chalk.|erior | | | | | |State. | |to the| |to the| | | | | | | |Chalk.| |Chalk.| | | +----------------+------+-------+------+------+------+------+------+------+ | MAMMIFERA. | | | | | | | | | |Ursus, | | * | | | | * | | 4 | |Mustela, | | * | | | | * | | 2 | |Canis, | | * | | | | * | | 4 | |Hyæna, | | * | | | | * | | 1 | |Felis, | | * | | | | * | | 2 | |Phoca, | | * | | | | * | | 2 | |Didelphis, | | * | | | | * | | 2 | |Castor, | | * | | | | * | | 1 | |Arvicola, | | * | | | | * | | 2 | |Lagomys, | | * | | | | * | | 2 | |Lepus, | | * | | | | * | | 2 | |Megalonyx, | | | * | | | * | | 1 | |Megatherium, | | * | * | | | * | | 1 | |Elephas, | | * | | | | * | | | |Mastodon, | | | * | | | * | | 6 | |Hippopotamus, | | * | | | | * | | 4 | |Sus, | | * | | | | * | | 1 | |Anoplotherium, | | | * | | | * | | 2 | |Xiphodon, | | | * | | | * | | 1 | |Dichobunus, | | | * | | | * | | 3 | |Anthracotherium,| | | * | | | * | | 2 | |Adapis, | | | * | | | * | | 1 | |Chæropotamus, | | | * | | | * | | 1 | |Rhinoceros, | | * | | | | * | | 4 | |Palæotherium, | | | * | | | * | | 8 | |Lophiodon, | | | * | | | * | | 5 |