Lesson 7 - Species Flashcards

(20 cards)

0
Q

Taxonomy

A

The science of naming and organizing organisms into related groups

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1
Q

Carl Linnaeus

A

Swedish naturalist, founding father of taxonomy, creator of binomial species name.

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2
Q

Binomial Name

A

Contains genus name (generic name) and specific epithet

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3
Q

Genus name

A

Shared by all species of the same genus

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4
Q

Specific epithet

A

May be shared by unrelated species (Tyrannosaurus rex, othnielia Rex, nuralagus Rex)

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5
Q

Rule of priority

A

Once a species is officially given a binomial name, the name cannot be changed unless the organism turns out to not be a new species)

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6
Q

Peer reviewed

A

Not published until it has been reviewed by other scientists to verify the contents are legitimate and scientifically reasonable

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7
Q

Holotype

A

Physical example of the newly found species, kept in a research institution so other scientists may study it. Does not need to be a complete specimen.

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8
Q

Interspecific variation

A

Individuals that differ in morphology because they belong to different species.

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9
Q

Intraspecific variation

A

Individuals that belong to the same species but have different morphologies

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10
Q

Sexual dimorphism

A

Males and females looking different from eachother

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11
Q

Ontogenic variation

A

Ovarian ion visible between young and old individuals of the species (besides simple size differences)

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12
Q

Individual variation

A

Normal variation that exists among individuals of the same species

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13
Q

Taphonomic variation

A

Geologically caused variation due to plastic variation

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14
Q

Biological species concept

A

Defines a species as a group of organisms that can successfully interbreed

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15
Q

Population

A

Any grouping of organisms that live in the same geographic area and interbreed

16
Q

Morphological species concept

A

Defines a species as a group of organisms that share a certain degree of physical similarity

17
Q

Lumper

A

Palaeontologists who require more differences before they consider two species to be distinct

18
Q

Splitter

A

Palaeontologists who require fewer differences before they consider two species to be distinct

19
Q

Hesperonychus elizabethae

A

Very small dromaeosaurid dinosaur discovered in Alberta. Holotype resides at the u of a