Evolution through the many eras that life that has dwelled upon this earth is not a linear path., from single celled to microorganisms to the development of a vertebrae to humans. The litany of change that the combined species have seen provides a stunning nature in which they are increasingly similar. It was found by way of studying the human genome that we share more in common with a microscopic worm than primates, though by way of studying physical differences, it’s extremely hard to believe. This brings one to the point of needing explanation; this paper attempts to provide that within a reasonable doubt.
The burgess shale formation is revered as one of the earliest fossil beds that have preserved soft part imprints. The date in which this Shale formation is said to have acquired its soft part imprints, five hundred to five hundred fifty million years ago, is referenced as the end of the pre- Cambrian era, thus marking the beginning of the Cambrian era. The pre-Cambrian era, spanning an estimated length of 4.6 - .5 billion years ago is denoted to an era in which single celled organisms were of the most advanced lifeforms on earth. The following era, The Cambrian era, is attributed as the era of the more complex multi-celled organisms spawning inhabitance on earth, inevitably leading to the spawn of vertebrates.
When examining fish, we have found that there was lobe finned fish in which the arrangements of its bones supported the fins, each of which was supported by what are known as long bones. Located on the side opposite to the long bone was another which has been deemed the shoulder bone. On the top, the long bones were accompanied many short bones. This development marked the beginning of the tetrapod, which is a four legged vertebrate skeleton. Over time, the long bone seems to have taken place as the top portion of the arm and/or leg as well as the two lower long bones took place as the middle part of the arm and/or legs. Eventually, a combination of several bones culminated at the tips to form the feet and/or hands. This is a clear indication of this lob boned fish being an associated ancestry to the modern day amphibians.
In specific fish during this time period crucial developments took place in the area of tooth and jaw development that laid the groundwork for what we see in specimens today. The Cyprinid fish is a good example, “Cyprinid fishes lack teeth in the oral jaw, instead they have a complex food-processing apparatus