Genesis 9:10

And with every living creature that [is] with you, of the fowl, of the cattle, and of every beast of the earth with
you; from all that go out of the ark, to every beast of the earth.

Genesis 8:19

Every beast, every creeping thing, and every fowl, [and] whatsoever creepeth upon the earth, after their kinds, went forth out of the ark.

Note:  "After their kinds" means that, there was not two of every sub-species; a horse could've been on the ark, and so a mule, a donkey, a zebra, etc, would've been "kinds" of horses.  Thus, a horse would represent all "kinds" of horses...

Genesis 7:23

And every living substance was destroyed which was upon the face of the ground, both man, and cattle, and the creeping things, and the fowl of the heaven; and they were destroyed from the earth: and Noah only remained [alive,] and they that [were] with him in the ark.

Genesis 7:21

And all flesh died that moved upon the earth, both of fowl, and of cattle, and of beast, and of every creeping thing that creepeth upon the earth, [the land] and every man:

Genesis 6:20

Of fowls after their kind, and of cattle [animals] after their kind, of every creeping thing of the earth after his kind, two of every [sort] shall come unto thee, to keep [them] alive.

Note:  The word "kind" is used when talking about the different species.  It does indicate that there could be variations of each "kind", and only one of each was taken.  For instance, there are horses, mules, donkeys, zebra's, but one of the "kind" of horse was taken.