TYPES OF FOSSILS -

S.No.	Fossil	Example	Mode of formation
1	Unaltered (Preservation)	Wooly mammoths, 25,000 years old, ice in Siberia, mummies, insect.	Whole bodies are found frozen in ice.
2	Altered or petrified fossils	Bones, shell, teeth, wood etc.	Replacement of organic parts by mineral deposits is called petrification.
3	Coprolite	Coenozoic mammals	Faecal pellets buried in sediments.
4	Moulds and Casts	Gastropods (Mullusca) from Portland	Moulds of hardened and fossilized mud that surround an extinct individual, the burried individuals have been completely destroyed but the moulds retained true copies of their shape.
5	Impressions	Archaeopteryx feather, leaf	Remains in fine grained sediments on which organisms died.
6	Imprints	Dinosaur footprints, prints of leaf, skin, wing etc.	Footprint trails, tract of organism.
7	Compression	Plants	Main tissues part disappears and only the outer tough parts remains intact covering into rock.

Posted Date: 10/8/2012 8:59:04 AM | Location : United States

Ask an Expert

Related Discussions:- Types of fossils, Assignment Help, Ask Question on Types of fossils, Get Answer, Expert's Help, Types of fossils Discussions

Write discussion on Types of fossils
Your posts are moderated

Write your message here..

Related Questions

Precaution for estimate the cholesterol using zlatkis method, Define Precau... Define Precautions for Estimation of Cholesterol Using Zlatkis Method 1. Use aldehyde free glacial acetic acid. 2. Use only glacial acetic for making up and adjusting the vo

What is the patients rbc volume, Tina administered 1 liter of sterile disti... Tina administered 1 liter of sterile distilled water IV to a patient. Predict the direction (increase, decrease, no change) you would expect Tina's infusion to have produced in the

Explain the localized aggressive periodontitis, Explain the Localized Aggre... Explain the Localized Aggressive Periodontitis Localized Aggressive Periodontitis: It has been in literature that transmission of peridontopathic microorganisms from periodon

Blood protozoan and ricketsial diseases - trypanosomiasis, B l oo d Prot... B l oo d Protozoan and Ricketsial Diseases T r y p a n o s o m i a si s It is also known as surra in equines and tibarsa in camel and results in intermitte

How is the nervous system of molluscs organized, How is the nervous system ... How is the nervous system of molluscs organized? Molluscs have well-developed sensory structures. It is established that cephalopods, such as squid and octopus, have eyes with

#zoology, what is amniocentosis what is amniocentosis

Determine in brief about the classic migraine, Determine in brief about the... Determine in brief about the Classic migraine This is probably the most interesting form, occurring in about 12% of migraine sufferers, because it begins with an aura, which us

What is the difference between osmosis and diffusion, What is the differenc... What is the difference between osmosis and diffusion? Osmosis is the occurrence of movement of solvent particles (in general, water) from a region of lower solute concentration

Phylum annelida, Classification Classification

Sectioned and formed meats, S e c t i o ned and Formed Meats Thes... S e c t i o ned and Formed Meats These are technically speaking restructured products, since they are partially disassembled and then reassembled to form products resembl