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

Twenty point programme and communication, The Twenty Point Programme and Co...

The Twenty Point Programme and Communication : In view of what we have discussed above, it may be useful to have a look at the Twenty Point Programme  (1986), which the Governme

Explain the organ of perception, Explain the Organ of Perception - Pre-requ...

Explain the Organ of Perception - Pre-requisites of Colour Perception These are the receptors. Receptors, as you may already know, are the rods and cones cells present in the r

Environmental accidents can be of various kinds, Question 1 What are th...

Question 1 What are the sources of water pollution? List some measures that can help overcome the problem of water pollution Question 2 Environmental accidents can b

Nested and split-plot designs, 1. How much variation is there in the routin...

1. How much variation is there in the routine analysis of fibre content of soya cotton cakes? The data are presented by the lab that did the test and the technician within the lab

Determine about the soil humus, Determine about the soil humus The orga...

Determine about the soil humus The organic constituents (organic colloids) are due to mainly the plants and partly the animals.  They form only a small fraction and get transfo

Agriculture on a large scale, Agriculture on a large scale: Crops had  ...

Agriculture on a large scale: Crops had  to  be  planted and  harvested in  the  right season. Floods were a recurrent phenomenon  in the river valleys, for which it was essent

People, where did people come from

where did people come from

Scientific and technical achievements of bronze age, Scientific and Technic...

Scientific and Technical Achievements of Bronze Age:   The major technical advance  that accompanied the rise of cities was the discovery and use of metals, particularly coppe

Scientific method, The effect of varying the pH of the yeast solution on th...

The effect of varying the pH of the yeast solution on the functioning of an enzyme catalase

Model water wheels, Model water wheels A meat skewer or a knitting need...

Model water wheels A meat skewer or a knitting needle can be used as an axle. An old typewriter ribbon- spool or a sticking plaster reel is useful as a basis for these improvis

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