What was the first vertebrate species and when did it appear in the fossil record? What were some of these vertebrates covered with?
The earliest vertebrates dates back to 500 million years ago, during ordovician period. They resembled hagfish. Some of the species include from Myllokunmingia and Haikouichthys ercaicunensis.
The early vertebrates were covered with cartilage endoskeleton, before the appearance of bone.
What was the first vertebrate species and when did it appear in the fossil record? What...
What was the species Cooksonia, when did it appear in the fossil record, and why is it significant in regards to evolution?
Where do the oldest fossil vertebrates and proto-vertebrates come from, and what do they tell us about early vertebrate evolution?
By definition, our knowledge of the fossil record will always be incomplete, but this does not mean that scientists are unable to test hypotheses regarding the evolution of our own and other species. Summarize the process (and often fortuitous suite of factors) by which an organism’s remains become fossilized. What other post-depositional factors influence fossil discoveries and our knowledge of the fossil record?
When you consider the structure of a vertebrate genome like that of your own species, how do we humans compare and contrast to single celled eukaryotic species with respect genome size, protein coding DNA, mobile genetic elements, and introns. You can just make comparative lists if you prefer.
Consider lineages, such as our own, for which the fossil record is fragmentary and incomplete. What disadvantages does this confer upon scientists trying to fathom the history of our species? What useful things can be learned from one or a few fragments of bone?
1. This fossil primate species may have been the first primates, originating from an adaptive ratiation of mammals. a. Apidium b. Proconsul c. Aegyptopithecus d. Plesiasapiformers 2. If you were studying primate population in which the dominant member was referred to as a "silverback", what primates would you most likely be observing? a. gorillas b. macaques c. chimpanzees dz bonobos
shark appears in the fossil record approximately 400 million years ago, whereas fields appear approximately 25 years ago. Compare and contrast the digestive of the digestive features of these hypercarnivores (diet > 75% meat) separated by 375 my of evolution
what caused the cambrian explosion what adaption appear in the fossil of the cambrian period.
Review the long-term atmospheric CO2 record. What evidence is there that burning of fossil fuels is responsible for recent increases in atmospheric CO2 concentrations? Describe why rapid changes in global temperatures will likely lead to the extinction of large numbers of species? How might changes in global temperatures specifically affect each of The Anolis lizards we studied this semester The Gorongosa ecosystem What are two ways human societies can mitigate these impacts on large scales now?
Someone comes to you and states that because there are gaps in the record for species "A" this shows that evolution is not true. How do you argue against this statement? In other words how do you argue in favor of evolution when gaps are present? Or do these gaps invalidate evolution? Restrict your discussion to the fossil record only. Please be detailed