Black-knobbed map turtle
| Black-knobbed map turtle | |
|---|---|
| Black-knobbed map turtle at Columbus Zoo and Aquarium | |
Vulnerable (NatureServe) | |
| Scientific classification | |
| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Class: | Reptilia |
| Order: | Testudines |
| Suborder: | Cryptodira |
| Superfamily: | Testudinoidea |
| Family: | Emydidae |
| Genus: | Graptemys |
| Species: | G. nigrinoda |
| Binomial name | |
| Graptemys nigrinoda Cagle, 1954 | |
| Subspecies | |
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| Range map | |
| Synonyms | |
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The black-knobbed map turtle (Graptemys nigrinoda), formerly known as the black-knobbed sawback, is a small to medium-sized aquatic turtle with light gray skin. Some of the most distinguishing characteristics of the black-knobbed map turtle, and the Graptemys genus, are the protruding "spikes" on the turtle's carapace. This species inhabits mainly the fall lines of rivers in the Mobile Bay drainage, in Alabama and Mississippi.
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