1. 17.1 The Linnaean System of Classification

2. Linnaeus Naming System
Still used today.
Taxonomy - the science of naming and classifying organisms
A standard way to refer to species and organize the diversity of living things.
Taxon - a group of organisms in a classification system

3. Scientific Names
Binomial nomenclature - a two-part scientific naming system.
uses Latin words
scientific names always written in italics
two parts are the genus name and species descriptor

4. Scientific Names cont.
A genus includes one or more physically similar species.
Species in the same genus are thought to be closely related.
Genus name is always capitalized.
A species descriptor is the second part of a scientific name.
always lowercase
always follows genus name; never written alone

5. Cougar – Felis concolor
Tiger - Panthera tigris
Lion - Panthera leo
Kitten – Felis domesticus
First letter of the
genus is capitalized
Genus and species
are always italicized
OR underlined if hand written
First letter of the
species is lowercase

6. 7 Levels Each level is included in the level above it.
Levels get increasingly specific from kingdom
to species.
DKPCOFGS
Dumb
King
Phillip
Came
Over
From
German
Soil

9. The Linnaean classification system has limitations.
Linnaeus taxonomy doesn’t account for molecular evidence.
The technology didn’t exist during Linneaus’ time.
Linnaean system based only on physical similarities.