Post Darwinian Developments

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Post Darwinian Developments
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Post Darwinian Developments I. Physics A. The
Age of the Earth
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Post Darwinian Developments I .Physics A. The
Age of the Earth 1. 1862 - William Thompson
- "Lord Kelvin"
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Post Darwinian Developments I. Physics A. The
Age of the Earth 1. 1862 - William Thompson
- "Lord Kelvin" - molten Earth - 7000oF
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Post Darwinian Developments I. Physics A. The
Age of the Earth 1. 1862 - William Thompson
- "Lord Kelvin" - molten Earth - 7000oF -
Fourier analysis of heat loss
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Post Darwinian Developments I. Physics A. The
Age of the Earth 1. 1862 - William Thompson
- "Lord Kelvin" - molten Earth - 7000oF -
Fourier analysis of heat loss - Earth was 100
million years old
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Post Darwinian Developments I. Physics A. The
Age of the Earth 1. 1862 - William Thompson
- "Lord Kelvin" - molten Earth - 7000oF -
Fourier analysis of heat loss - Earth was 100
million years old
- Darwin thought it had to be at least 300
million to allow for evolution to occur.
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Post Darwinian Developments I. Physics A. The
Age of the Earth 1. 1862 - William Thompson
- "Lord Kelvin" 2. 1896 - Henri Becquerel
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Post Darwinian Developments I. Physics A. The
Age of the Earth 1. 1862 - William Thompson
- "Lord Kelvin" 2. 1896 - Henri Becquerel
- discovers emission of Uranium
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Post Darwinian Developments I. Physics A. The
Age of the Earth 1. 1862 - William Thompson
- "Lord Kelvin" 2. 1896 - Henri Becquerel
- discovers emission of Uranium 3. 1903 -
Pierre and Marie Curie - discover emission from
new element - Radium
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Post Darwinian Developments I. Physics A. The
Age of the Earth 1. 1862 - William Thompson
- "Lord Kelvin" 2. 1896 - Henri Becquerel
- discovers emission of Uranium 3. 1903 -
Pierre and Marie Curie - discover emission from
new element - Radium 4. 1904 - Ernst
Rutherford - "The discovery of the radio-active
elements, which in their disintegration liberate
enormous amounts of energy, thus increases the
possible limit of the duration of life on this
planet, and allows the time claimed by the
geologist and biologist for the process of
evolution."
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Post Darwinian Developments II. Geology A. The
Dynamic Earth
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Post Darwinian Developments II. Geology A. The
Dynamic Earth - why do coastlines fit?
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Post Darwinian Developments II. Geology A. The
Dynamic Earth 1. why do coastlines fit? -
1801 - Von Humboldt - intervening land sank
(Atlantis?) or flood excavated it.
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Post Darwinian Developments II. Geology A. The
Dynamic Earth 2. Disjunct Distributions? -
southern beech - marsupial fauna
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Post Darwinian Developments II. Geology A. The
Dynamic Earth 3. Continental Drift - 1915 -
Alfred Wegener
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- Not accepted until the 1960s and 1970s, when
sea floor spreading was observed, sonar was used
to map the ocean, and paleomagnetism demonstrated
where continents had been in the past relative to
magnetic north.
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- North and South Atlantic and Indian Ocean
Basins.
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Post Darwinian Developments III.
Paleontology A. Intermediate Fossils
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FISH AMPHIBIANS
Ichthyostega
- Fins and gill covers (FISH) - Feet
(AMPHIBIANS) - After fish, before amphibians
(just where evolution predicts it should be)
XXX
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D. Devonian (417-354 mya) - Placoderms -
Sharks - Lobe-finned Fishes
365 mya
385 mya
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Eusthenopteron

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Panderichthys rhombolepis

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Acanthostega gunnari

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Ichthyostega sp.

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D. Devonian (417-354 mya) - Placoderms -
Sharks - Lobe-finned Fishes
365 mya
385 mya
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Tiktaalik roseae

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D. Devonian (417-354 mya) - Placoderms -
Sharks - Lobe-finned Fishes
365 mya
385 mya
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Archeopteryx

• - Fingers, teeth, tail (Reptiles)
• Feathers (birds)
• - After reptiles, before birds (just where
  evolution predicts it should be)

REPTILES BIRDS
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Therapsids
REPTILES MAMMALS

• - Mammalian skeleton
• Intermediate ear
• - scales
• - After reptiles, before mammals (just where
  evolution predicts it should be)

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Mammals from the Jurassic (185 mya)
Therapsids from the Permian (280 mya) to the
Triassic (200mya)
Pelycosaur Reptiles of the Carboniferous (300 mya)