Palaeontological evidence, Science

Assignment Help:

Palaeontological Evidence:

Palaeontology  is a branch of  earth sciences, which is essentially a study of plant and animal life in the past geological periods, millions of years ago. It deals with  the successive plants and animals which have inhabited the earth since the earliest times, Evidence of  their existence is left in the form of  skeletons and bones buried in the rocks. These are known as fossils. Crucial evidence of  human evolution is provided by the study of  these fossils. 

Sometimes,  the buried body and the skeleton of  an animal disintegrate  entirely. If the surrounding material is sufficiently firm, a cavity may remain, having the exact outlines of the structures that disappeared. Such a cavity is called mold, Similar to molds are the impressions. These are left by extinct objects or parts of  the body upon the surrounding  material. The impression is made while the surrounding material is soft, like footprints in clay or lava.  Footprints of extinct animals are also impressions affording  valuable information about the animals that made them. 

It  is important to mention here, that early human fossils that have been found are generally fragmentary and incomplete. This is because only during the last 50,000 years or so, man started burying his dead. These later fossils are better preserved and, therefore, give us more information. For the earlier period, parts of bones are often the basis of imagining the re-construction of  the whole skeleton. The finding of fossils deposits  is both a matter of chance and of  deliberate excavation in certain regions of the earth.  


Related Discussions:- Palaeontological evidence

Observing sun spots, Observing sun spots Use the telescope that you mad...

Observing sun spots Use the telescope that you made in a last experiment. Set it up so that it points directly at the sun and focus it so that a clear and bright image of the s

Internal bleeding-controlling bleeding, Internal Bleeding : There is littl...

Internal Bleeding : There is little that you can do for most internal bleeding other than treating for shock and calling for a doctor immediately. If the patient's condition becom

Summary of fire extinguishers for different types of fire, Fire extinguishe...

Fire extinguishers You would recall the classification of fires dealt. Table summaries the type of extinguisher used for different classes of fire. Table: Summary of fire e

The earths iterior, Ask question how many years that our earth survived?#Mi...

Ask question how many years that our earth survived?#Minimum 100 words accepted#

Define the structure of ear - the organ of hearing, Define the Structure of...

Define the Structure of Ear - The Organ of Hearing The human ear consists of three sections: the outer ear, the middle ear and the inner ear as illustrated in Figure. The oute

Explain rh blood grouping system, Explain Rh Blood Grouping System Some...

Explain Rh Blood Grouping System Some individuals also have a so called Rh antigen on the surface of their RBCs. Those who have it are called Rh (+) and those who do not have i

Explain the functions of multicellular organism, Explain the functions of M...

Explain the functions of Multicellular Organism Multicellular organisms are specialized quite similar to a team that does a lot of work efficiently as compared to a single pers

Human evolution, Human Evolution: Charles Darwin in  the 'Origin of S...

Human Evolution: Charles Darwin in  the 'Origin of Species' gave a lilechanism for the evolution of  plants and animals in general, even  though he had speculated about the o

Nerve tissue, What is a feature of a nerve tissue?

What is a feature of a nerve tissue?

What is protein, Explain Protein  Protein  is  derived  from  a  Greek...

Explain Protein  Protein  is  derived  from  a  Greek word  "PROTOS"  which  means  "Pre eminent", "jht or foremost"  or  primary matter.  This  name was  suggested  by  Berzi

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd