An intermediate form categorized between fish and tetrapods
The study of past geological periods through the examination and analysis of fossils.
Occurring only as the result of the presence of oxygen.
The genetic material of an organism.
An unexpected and significant alteration in the evolutionary process.
Elastic bone-like skeletal tissue.
Lacking evil or wicked intentions; harmless.
To make fun of; to satirize or parody.
The point of separation, differentiation or segregation.
A truth that is self-evident.
Something that is beneficial to the current need or requirement.
An obstruction or blockage.
Burdensome or tediously difficult.
A limb; an accessory; an add-on.
Fibrous proteins found in connective tissue capable of yielding gelatin and glue when boiled.
The initial stages of development and growth.
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