This as well, can be related to what Dr. Laura Martin said about evolution, it is always difficult to classify, or explain when a species began since there is no immediate ancestor to demonstrate what is needed. .
Religion always has a justification to what is happening around the world or within ourselves. The creational story through the Catholic Bible states that the first human, male, was created during the 6th day but what seems to be unbelievable is that he, Adam was made from sand, and surprisingly, from the male came the first women Eve. God, wanted these humans to be the supreme power of the world; Genesis 2-3: "let them have dominion over the fish of the sea, and over the fowl of the air, and over the cattle, and over all the earth, and over every creeping thing that creepeth upon the earth." Believers within the Catholic Church, consider this to be the reason to why humans were created, believe that everything that is happening around us or within ourselves is meant to be, or just like Dr. Snyder mentioned, "Deus vult" -- "God wills it." .
As time has continued to pass we have encountered more possibilities, scientifically to how and when the creation of humans started. Through the article "What does the dreaded "E" word mean anyway?" by Stephen Gould, we encounter the idea that the first signs of human DNA was through vertebrates; evolving due to conditions in the environment. However, still many people have the idea that humans were meant to be the dominant species in the world, but we have found that it is a matter of who survived the best, through the idea of natural selection proposed by Charles Darwin. Darwin argued that evolution occurs, we are able to see this by observations, in his case he observed and found different species of Finches. .
Classifying an organisms based on certain characteristics has been one of many conflicts that have arose since scientist have found and continue to find many new species.