Bonus Blog#3

After this week’s studying, there are many categories for us to identify the unknown hominid. Here I want to mention is the morphology. By the morphology, we can identify the hominid species by comparing the size of their brain. With the findings of paleoanthropologists, the brain sizes, or can be described as encephalization, is an increasing of size and complexity of a brain. Based on the size and complexity, it means a species will more evolved if it has a comparatively larger and more complex brain. Like different animals have different size and complex. And the lines inside the brain also increase the complexity of the brain. Moreover, the size and shape of the teeth is also a useful evidence within morphology. By the evidence of paleoanthropologist, they can classify different species by checking dental patterns. Since different animals have different dental patterns, paleoanthropologist can easily classify the specific species. Also, the dating method is a good way for identifying. Paleoanthropologist can use dating method to figure out the range of the age of a bone, and then determining the hominid by its bone’s age and other evidence. Besides the dating method, comparing the size of bone can also be helpful to classify a unknown kind of hominid. By comparing the bone with some exist bone of hominids, it will be much easier to classify which species is more similar. And more, classify the hominid species by walking technique is also useful. Since once the species is bipedal, it seems like show more evidence to prove it is a hominid. By all of these classify method in morphology, it will give more and more specific ways to determine the hominid.

Homo naledi is one of the new found hominid species. It was found in south Africa two years ago.The evidence is its brain size and their bone size. The way Paleoanthropologist use to identify is similar to the lecture material. They compared its bone to existence bone of hominid, and use the ruler to measure its bone’s size. For this case, I think the morphology is interesting. The ways for determining unknown hominid comparasion  with different kinds is really useful.

News Cited:”Strange New Kin”,Racheal Larimore, science-the state of the universe,Sept.10.2015

2 thoughts on “Bonus Blog#3

  1. This was a really good post. I really liked the part where you added species evolve as their brain sizes get larger. This puts a fine point on how overtime we evolved to able to do the things we can do today, and the first greatest step was becoming bipedal. This really connects what we learned in the lecture material because we have learned the timeline of how we as a species evolved from a 200 cranial capacity (cc) to a 1200 cc, also with brain capacity increasing we also evolved to a certain dental record. Our dental record is a major indicator of what species the bones identified are because it shows whether the presence of canine teeth or larger molars determines the diet that the species. Overtime our teeth have become smaller and the absence of our canine teeth has put us in the category of hominid as well as other traits. The only thing i didn’t understand was what you meant by the lines inside the brain also grow, but besides that i think you did good job tying this material to the lecture in how we identify a new species, also the dating methods that was used in dating Homo Naledi was the law of superposition and this method was used on a majority of newly discovered fossils that have the absence of volcanic ash which made paleontologist use relative techniques which meant that they had to use law of superposition and faunal correlation in order to date the bone material, since they were unable to use absolute dating methods consisting of argon-argon dating, potassium-argon dating.

  2. I also picked Homo naledi for my blog post. We however read different articles. National Geographic funded a good amount of the trip to recover the fossils found, so they had videos of where and how they recovered the fossils. They were deep in a cave that the explorers had to squeeze though a slit seven inches wide! Also another amazing thing about this discovery is that they found around fifteen different individuals in one spot. This was evidence that these H. naledi showed the human like quality of barring there dead. This characteristic is only a characteristic of Homo species and what was thought before this discovery was that the latest evidence of barring the dead was with Neanderthals. I think this just shows that there is a lot still out there to discover and explore.
    I liked how you explained the differences in the morphology’s. I think that its crazy that in the recent million years the Homo group grew in brain size so quickly, like never seen before. With that growing it has enabled us to pretty much conquer the world. Sadly this has not been beneficial for the rest of the species living on Earth. We sadly are destroying even our closest relatives due to our wants and needs. I hope that soon, but eventually we change our ways of living to more helpful for the creatures on this planet. Anyway, your post was very well written and it covered all the ways we are able to identify past primates and and other species that once lived here.

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