scroll to top
Stuck on your essay?
Get ideas from this essay and see how your work stacks up
Word Count: 1,195
From Water to Land Revision Abstract The early tetrapods were the first vertebrates to actually walk the solid earth They began their conquest of land in the Paleozoic era around 360 million years ago The question many paleontologists have been asking for a long period of time is whether the anatomy for locomotion on land was developed in water for swimming purposes or if it was adapted after the creatures became terrestrial Recent findings of fossils indicate that the transformations of the aquatic creatures happened underwater in order to help them survive in the changing world When looking for answers they had to examine forearm hip wrist finger and other bones as well as the lungs or gills of the early tetrapod fossils This information is critical in understanding the history and the process of growth and change It aids in learning about human evolution Background Tetrapods are creatures with four limbs hips shoulders fingers and toes which developed sometime after lobe-finned fish and before the first fully terrestrial vertebrates The earliest tetrapod known is Acanthostega It is also considered the most primitive tetrapod It is very close to its fish ancestry but still anatomically far from its terrestrial relatives These creatures still lived in water but they had a lot of the terrestrial tetrapod anatomical characteristics Introduction Before tetrapods existed all vertebrates were confined to living in aquatic habitats The only animals that lived on land were arthropods Through natural adaptations the fish developed into amphibians This colossal stage of change made necessary the evolution of new ways of breathing locomotion and reproduction Paleontologists needed to understand how this transition took place If the changes in anatomy of the fish developed on land then they served the same purposes they serve today such as walking But what advantages would those same body parts give to the aquatic creatures still living in water This is one of the questions the scientists are asking themselves
@Kibin is a lifesaver for my essay right now!!
- Sandra Slivka, student @ UC Berkeley
Wow, this is the best essay help I've ever received!
- Camvu Pham, student @ U of M
If I'd known about @Kibin in college, I would have gotten much more sleep
- Jen Soust, alumni @ UCLA