Origin of Species Variorum

↑ 1 blocks not present in 1869 1872; present in 1859 1860 1861 1866

In regard to the Invertebrata, Barrande, and a higher authority could not be named, asserts that he is every day taught that palæozoic animals, though belonging to the same orders, families, or genera with those living at the present day, were not at this early epoch limited in such distinct groups as they now are.

→ living 1859 1860 1861 1866 1869

any two living 1872

→ groups. 1859 1860 1861 1866 1869

groups of species. 1872

→ the 1859 1860 1861 1866 1869

or groups, the 1872

→ OMIT 1869 1872

I apprehend that 1859 1860 1861 1866

→ certainly 1869 1872

would have to 1859 1860 1861 1866

→ OMIT 1869 1872

from each other 1859 1860 1861 1866

→ are separated 1869 1872

of the same two groups would be distinguished 1859 1860 1861 1866

→ quite distinct, made at that period a somewhat nearer 1869

quite distinct, at that period made some small 1859 1860 1861 1866

made a somewhat nearer 1872

→ other. 1859 1860 1861 1866 1869

other than they now do. 1872

Huxley to be partially bridged over in the most unexpected manner, by, on the one hand, the ostrich and extinct Archeopteryx, and on the other hand, the Compsognathus, one of the Dinosaurians— that group which includes the most gigantic of all terrestrial reptiles. Turning to the Invertebrata, Barrande asserts, and a higher authority could not be named, that he is every day taught that, although palæozoic animals can certainly be classed under existing groups, yet that at this ancient period the groups were not so distinctly separated from each other as they now are. ↑

Some writers have objected to any extinct

species,

species

or group of

species,

species

being considered as intermediate between →living

species,

species

or →groups. If by this term it is meant that an extinct form is directly intermediate in all its characters between two living

forms

forms,

→the objection is

probably

....

valid. But →OMIT in a

perfectly

....

natural classification many fossil species →certainly stand between living species, and some extinct genera between living genera, even between genera belonging to distinct families. The most common case, especially with respect to very distinct groups, such as fish and reptiles, seems to be,

that

that,

supposing them to be distinguished at the present day →OMIT by a

score of

dozen

characters, the ancient members →are separated by a somewhat lesser number of

characters;

characters,

so that the two

groups

groups,

~~though~~

though

formerly →quite distinct, made at that period a somewhat nearer approach to each →other.

It is a common belief that the more ancient a form is, by so much the more it tends to connect by some of its characters groups now widely separated from each other. This remark no doubt must be restricted to those groups which have undergone much change in the course of geological ages; and it would be difficult to prove the truth of the proposition, for every now and then even a living animal, as the Lepidosiren, is

discovered

dis- covered