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26 Cards in this Set
- Front
- Back
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Synamorphies |
Characteristic that is an evolutionary novelty that gets passed down to its descendants. |
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Plesiomorphic characteristics |
Ancestral characteristics that do not change. |
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Cladistics |
Complex subject, the method of classifying fossils. |
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Lophophore |
Fanny branch like structure that is extended from the organism to filter feed. |
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Radula |
Bristly tongue like structure used by gastropods to rasp food. Scraping algae or drilling shells. |
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Strike |
The direction that the length of a rock facing goes. |
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Dip |
The angle of which the rock facing has been moved to. |
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Tetrapods |
Earth dwelling creatures. |
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Ornithiscian |
Bird hipped |
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Saurischian |
Lizard hipped. |
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Streams |
Any size flowing water |
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Alluvial fan |
Slowly sloping geologic formation where a stream and deposits sediment. |
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Delta |
Where a stream enters standing water and deposits sediment, slowing flow and fanning out. |
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Ablation |
Total amount of ice lost each year by a glacier. |
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Sublimation |
Direct transfer of solid to gas |
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Glacial striation |
Scrapes caused by glaciers. |
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Moraines |
Deposit of sediment at the edge of a glacier due to melting. |
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Drumlins |
Small hills left by glaciers. |
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Esker |
Snaking geologic structure caused by the stream leaving a glacier. |
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Eolian |
Geologic process caused by wind. |
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Deflation |
Erosion of sand where the wind carries it away, only leaving the rocks behind. |
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Stratigraphy |
Study of stratified rocks |
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Biostratigraphy |
Strata are defined by their fossil content. |
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Stratigraphic range |
Total vertical interval which a species occurs. |
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Magnetic stratigraphy |
Using magnetic properties of a rock to correlate ages of strata |
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Lithostrarigraphy |
Subdivision of stratigraphic record on the basis of physical, or chemical characteristics of rock. |
