0
What do you mean by "partially evolved"? Since evolution is an ongoing process, any existing species will always be in a state of change. If you're referring to intermediate forms, some of the best examples to have been found in recent years are various fossils that show characteristics of both dinosaurs (scales, teeth, claws on all 4 appendages) and birds (beaks and feathers). Check out a site such as www.NewScientist.com for articles that are understandable without needing a graduate degree in Paleontology.
Wiki User
∙ 17y ago
Add your answer:
Earn +20 pts
What is the importance of index fossils?
Index fossils are the fossils of short-lived species which, because of their short lives, can be used by scientists to identify the age of the rock strata in which they're found. (For example, if you know a certain species only lived in the Cambrian period, and you find some fossils of this species in some rock, then you know the other fossils you find in that rock must also have come from the Cambrian period.) Some examples of species that left behind index fossils, and their related historical periods, are:Billingsella corrugagta - Cambrian period, Palaeozoic eraCactocrinus multibrachiatus - Mississippian period, Palaeozoic eraScaphites hippocrepia - Cretaceous period, Mesozoic eraNeptunea tabulata - Quarternary period, Cenozoic eraSee the links below for more examples and info.
Fossils of a species of bird are found in layer 3 Which layer is most likely to have organisms that lived at the same time as the bird species?
Layer 2
What is the importance of Lucy in human evolution?
Lucy was one of the very first nearly complete fossils to be found of the species Australopithecus afarensis, a morphological intermediate between more basal species of ape and modern humans.
What makes a fossil an index fossil?
fossils are preserved animals or plants. but index fossils are fossils have wide distribution,many of them,evolves rapidly, and very easy to recognize. Ammonites are index fossils. The fossils were made only in a certain short time period.
How can scientists use the fossil record to provide evidence that evolution of organisms has occurred over time?
Using methods such as radioactive dating, scientists can determine the approximate age of a fossil or the rock in which it was found. Utilizing this knowledge of approximate age, scientists can compare progressive fossils, and identify changes. Changes are often minimal, and sometimes organisms do not change at all for large amounts of time, making comparative analysis of fossils a tedious task. Some eras produced better fossils than others. This can have several causes, such as particularly prolific habitation of environments that more easily produce fossils, general population booms, certain mass extinction events, and even happenstance. Because some eras produce better or more fossils, and some produce few to almost none, the fossil record can sometimes falter. In such cases, scientific investigations may be forced to fill in blanks between species using genetic analysis of preceding and proceeding species or groups within species, if the fossil(s) contain(s) any remaining genetic material. In other cases, computers will be used to recreate images of the species based on fossils, and identify progression between species. In any case, the fossil record is often used as a base off of which to obtain or recreate further information about an organism's evolutionary history.
If species didn't change what type of fossils would we see?
If there was no change in species over time, then all fossils of that species would be identical.
How do fossils that form in different rock layers provide evidence of evolution?
Fossils' existence confirms that species are not fixed but can evolve into other species over time
How do fossils show changes in related species?
Fossils are used to show changes because they are permanent. These fossils are also old and show evolutionary changes in species alive today.
Which layer is most likely to contain fossils that resemble existing species?
new layer of the fossils
How do fossils that formed in different rock layers provide evidence-of evolution?
Fossils' existence confirms that species are not fixed but can evolve into other species over time
What happened to the species that are now as index fossils?
they are used
How does the study of fossils represent the evolution of species over geological time?
The study of fossils represent the evolution of species by the time period between when they became fossils and what the ancestory line is
What do fossils reveal about changes in species over time?
The changes in different species penis sizes.
How do fossils help geologists?
Fossils help geologists discover new species. Fossils also explain and show the age of the specimen and change in life forms.
Fossils provide the most information about extinct species?
structures
What happened to the species that are now used as index fossils?
they are used
Naracoorte caves fossils. are they extinict or evolved?
Both! The fossils within limestone holding caves are of long-extinct animals, but they had still evolved to the species preserved as fossils.
