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Age Of Dinosaurs > Vocabulary > Flashcards

Vocabulary Flashcards

0
Q

Pleisiomorphy

A

Character state ancestrally present in a set of terminal taxa
Ex- cell wall is something a parrot, plant, and tree all have

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1
Q

Parapyletic group

A

An ancestor and some but not all of its descendants

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2
Q

Polytomy

A

Three or more branches emerging from one node

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3
Q

Polyphyletic

A

Unrelated taxa does not include ancestor

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4
Q

Monophyletic

A

A group with an ancestor and all it’s descendants

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5
Q

Relative age

A

Refers to order in which events took place

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6
Q

Absolute age

A

Refers to the actual numerical age of an event

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7
Q

Superposition

A

Older bigger, younger top

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8
Q

Radioactivity

A

Discovery of decay process

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9
Q

Radiometric

A

How much time has passed since rock has formed

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10
Q

Best way to preserve fossils?

A

Rapidly bury

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11
Q

Unaltered remains

A

Freezing
Mummification
Amber
Anoxia (no oxygen)

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12
Q

Paleontology

A

Study of past life as preserved in geological record

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13
Q

Science

A

A method, a process

Starts with repeatable observations

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14
Q

Repeatable observations

A

Process (lab)

Resampling (from field)

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15
Q

Hypothesis

A

Am idea or proposition who’s proof or falsehood isn’t known

16
Q

Theory

A

Explains hypothesis

17
Q

Fact

A

Idea confirmed by corroboration and consilience

18
Q

How is science different from other endeavors?

A
  1. Predictive power
  2. Inevitably of ideas
  3. No reliance on authority or precedent
  4. Universality of ideas
  5. Value neutrality
19
Q

Process of molds and casts

A
  1. Original objects are buried
  2. Sediment hardens
  3. Fossil dissolves leaving behind a cavity (mold)
    Or
  4. Cavity is filled with minerals (cast)
20
Q

Informative value of fossil

A

Completeness
Articulation
Quality of preservation

Age Of Dinosaurs (5 decks)

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