OF
The Classes, Orders, or Families, of Animals, occurring in a Living and Fossil State, with their Geognostical Distribution.
| Number of Genera which are found | Number of Species. | ||||||||
| Names of Classes, Orders, or Families. |
In the living state only. | Living, and Fossil. | In the Fossil state only. | In the Strata anterior to the Chalk. | In the Strata of the Chalk. | In the Strata posterior to the Chalk. | Total number of Genera. | In the living State. | In the fossil State. |
| Polyparia, | 23 | 30 | 52 | 47 | 19 | 36 | 105 | 527 | 414 |
| Stellaridæ, | 4 | 2 | 4 | 4 | 76 | 4 | |||
| Echinidæ, | 2 | 6 | 3 | 7 | 8 | 5 | 11 | 95 | 112 |
| Annulosa, | 2 | 1 | 1 | 1 | 2 | 3 | 17 | 29 | |
| Serpulacea, | 2 | 3 | 1 | 3 | 3 | 3 | 6 | 36 | 69 |
| Cirripeda, | 8 | 2 | 1 | 2 | 10 | 50 | 17 | ||
| Tubicolæ, | 1 | 3 | 2 | 5 | 6 | 11 | 16 | ||
| Pholadaria, | 2 | 2 | 2 | 12 | 4 | ||||
| Bivalve shells, | 18 | 61 | 24 | 44 | 25 | 51 | 103 | 1009 | 1104 |
| Univalve shells, | 33 | 87 | 28 | 27 | 16 | 93 | 148 | 1945 | 1544 |
| Genera little known, | 4 | 3 | 1 | 4 | 5 | ||||
| Crustacea, | 21 | 5 | 5 | 2 | 9 | 28 | 54 | ||
| Pisces, | 54 | 6 | 11 | 2 | 55 | 60 | 183 | ||
| Mammifera & Cetacea, | 24 | 12 | 36 | 36 | 89 | ||||
| Aves,(a) | 3 | 3 | 3 | 3 | |||||
| Reptilia, | 4 | 4 | 3 | 2 | 4 | 8 | 23 | ||
| Insecta, | 14 | 14 | 14 | ||||||
| Vegetabilia, | 14 | 10 | 12 | 1 | 15 | 24 | |||
(a) The fossil remains of birds being very difficult to be recognized, the number of genera in that state is undoubtably much more considerable.
THE END.