Thelodonti
Sign in to saveThelodonti (from Greek: "nipple teeth") is a class of extinct Palaeozoic jawless fishes with distinctive scales instead of large plates of armor. These fish lived in both freshwater and marine environments, first appearing during the Late Ordovician, and perishing shortly after the Frasnian–Famennian extinction event in the Late Devonian.
Wikidata facts
- Parent taxon
- Vertebrata
- Image
- Thelodus parvidens.JPG
Show 6 more facts
- Commons category
- Thelodonti
- taxon name
- Thelodonti
- topic's main category
- Category:Thelodonti
- taxon rank
- class
- start time
- 458000000-
- end time
- 359000000-
Sources (1)
via Wikidata · CC0
~13 min read
Encyclopedic overview
10 sectionsContents
- Description
- Scales
- Taxonomy
- Ecology
- Utility as biostratigraphic markers
- Evolutionary patterns
- See also
- Further reading
- References
- External links
Thelodonti (from Greek: "nipple teeth") is a class of extinct Palaeozoic jawless fishes with distinctive scales instead of large plates of armor. These fish lived in both freshwater and marine environments, first appearing during the Late Ordovician, and perishing shortly after the Frasnian–Famennian extinction event in the Late Devonian.
There is much debate over whether the group represents a monophyletic grouping, or disparate stem groups to the major lines of jawless and jawed fish.
Excerpted from Wikipedia’s “Thelodonti” article, available under the CC BY-SA 4.0 licence.