Temporal range: Late Silurian
Andreolepis is an extinct genus of prehistoric fish, which lived around 420 million years ago. It is placed in the monogeneric family Andreolepididae and is generally regarded as a primitive member of the class Actinopterygii based on its ganoid scale structure; however some new research regards it as a stem group of osteichthyans.
Researchers have used microremains of an Andreolepsis to determine its origins and found that it dated back to the late Silurian.
This organism is considered an ancestor where humans got their teeth from, a vertebrate. During studies, researchers found that the Andreolepsis was capable of shedding its teeth by basal resorption, and it is considered a rather primitive mode of tooth replacement.
- Andreolepis (Actinopterygii) in the Upper Silurian of Northern Eurasia
- The Paleobiology Database
- Botella, Hector; Blom, Henning; Dorka, Markus; Ahlberg, Per Erik; Janvier, Philippe (August 2007). "Jaws and teeth of the earliest bony fishes". Nature. 448 (7153): 583–586. doi:10.1038/nature05989. ISSN 1476-4687. PMID 17671501.
- Chen, Donglei; Janvier, Philippe; Ahlberg, Per E.; Blom, Henning (August 2012). "Scale morphology and squamation of the Late Silurian osteichthyanAndreolepisfrom Gotland, Sweden". Historical Biology. 24 (4): 411–423. doi:10.1080/08912963.2012.668187. ISSN 0891-2963.
- Chen, Donglei; Blom, Henning; Sanchez, Sophie; Tafforeau, Paul; Ahlberg, Per E. (2016-10-17). "The stem osteichthyan Andreolepis and the origin of tooth replacement". Nature. 539 (7628): 237–241. doi:10.1038/nature19812. ISSN 0028-0836.
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