The Book of Genesis cannot be used as evidence of Earth's creation. Contrary to popular belief, there is no creation account in Genesis; rather there are several such accounts and these accounts contain multiple contradictions. The first creation story is told in Genesis 1:1 to 2:3, and the second story is from Genesis 2:4-25.
According the First Chapter of Genesis, on day five the fishes and birdies were brought forth; and on day six all other creatures great and small were created, and then and only then were Adam and Eve created together. I will not quote the verses since everyone has heard this story many times and should know it by heart. The important thing to remember is that the First Chapter of Genesis states in clear and certain terms that ALL the animals (birdies, fishes and beasts of the field) were created prior to the creation of Adam.
However, there is another creation account in the Second Chapter of Genesis which says that Adam was created first, then the animals, and finally Eve. This is the creation sequence as described in Genesis Chapter 2:15-23, KJV (I have eliminated verse numbers for easier reading and edited for brevity without changing substance):
“And the LORD God formed man of the dust of the ground, and breathed into his nostrils the breath of life; and man became a living soul. And the LORD God planted a garden eastward in Eden; and there he put the man whom he had formed. And out of the ground made the LORD God to grow every tree that is pleasant to the sight, and good for food; the tree of life also in the midst of the garden, and the tree of knowledge of good and evil.
“And the LORD God said, It is not good that the man should be alone; I will make him an help meet for him. And out of the ground the LORD God formed every beast of the field, and every fowl of the air; and brought them unto Adam to see what he would call them: and whatsoever Adam called every living creature, that was the name thereof. And Adam gave names to all cattle, and to the fowl of the air, and to every beast of the field; but for Adam there was not found an help meet for him.
“And the LORD God caused a deep sleep to fall upon Adam, and he slept: and he took one of his ribs, and closed up the flesh instead thereof; And the rib, which the LORD God had taken from man, made he a woman, and brought her unto the man. And Adam said, This is now bone of my bones, and flesh of my flesh: she shall be called Woman, because she was taken out of Man.”
Now it is clear from the quoted scripture that God first created Adam, and then the animals and finally Eve. There is simply no way to interpret these words to give any other order of creation. The Bible says that Adam was alone in the garden and God decided that Adam needed a helpmate. The flow of the narrative proves that Adam was created before the animals, and there is a single sentence which establishes this beyond the possibility of debate; “And..the LORD God formed every beast of the field, and every fowl of the air.....; but for Adam there was not found an help meet for him.”
The word “but” in the above sentence is a conjunction which shows that the sentences prior to and subsequent to this conjunction are related. The context shows that the latter sentence diminishes or restricts the former, so that the proper definition of “but” is: still, yet, or in spite of . This shows that God was attempting to create a helpmate for his first creation, Adam, but initially failed. Of course, God would not attempt to find a helpmate for a non-existing being, so that Adam clearly was created prior to the animals. It is logically and linguistically impossible to read the above verses and interpret the order of creation in any way other than: Adam, then the animals, then Eve.
In conclusion, the First Chapter of Genesis says Adam was created after the animals, but the Second Chapter of Genesis says that Adam was created before the animals. There are many other contradictions between the two versions, such as Genesis 1:20 which says that flying fowl were created out of the water and Genesis 2:19 claims they were created out of the ground. This has caused many Christians to claim the accounts are not to be taken literally, but allegorically. At any rate, a single contradiction invalidates any claim to divinely inspired authorship of the creation account(s). Absent a claim of divine authorship and unsupported by scientific corroboration, the Biblical creation account is totally lacking in evidentiary value.
Of course that is only my humble opinion (OK, I lied about the humble part).