Szalay, Frederick S. Department of Vertebrate Paleontology, American Museum of Natural History, New York, New York.
Last reviewed:January 2021
- Tissue components
- Evolution and phylogeny
- Taxonomic studies
- Patterns of dentition
- Related Primary Literature
- Additional Reading
Any one of the structures found in the mouth of most vertebrates which, in their most primitive form, were conical and were usually used for seizing, cutting up, or chewing food, or for all three of these purposes. Although the true enamel of more advanced vertebrates is ectodermal, the remaining components of the teeth are mesodermal in their embryological origins (Fig. 1). The basic tissues that make up the vertebrate tooth are enamel, dentin, cementum, and pulp. Tooth replacement in vertebrates other than mammals may be explained by a rhythmical wave of impulses inducing the tooth germs, proceeding from the front to the back of the jaw. In their evolutionary origins, teeth are derivatives of bony tubercles which developed on the outer part of the body of primitive agnathans, fishlike stem vertebrates, forming a protective shell around them. An easy confirmation of how the tubercles are thought to have developed into teeth can be seen in the identical embryonic development of the scales and teeth of young sharks.
The content above is only an excerpt.
for your institution. Subscribe
To learn more about subscribing to AccessScience, or to request a no-risk trial of this award-winning scientific reference for your institution, fill in your information and a member of our Sales Team will contact you as soon as possible.
to your librarian. Recommend
Let your librarian know about the award-winning gateway to the most trustworthy and accurate scientific information.
AccessScience provides the most accurate and trustworthy scientific information available.
Recognized as an award-winning gateway to scientific knowledge, AccessScience is an amazing online resource that contains high-quality reference material written specifically for students. Contributors include more than 10,000 highly qualified scientists and 46 Nobel Prize winners.
MORE THAN 8700 articles covering all major scientific disciplines and encompassing the McGraw-Hill Encyclopedia of Science & Technology and McGraw-Hill Yearbook of Science & Technology
115,000-PLUS definitions from the McGraw-Hill Dictionary of Scientific and Technical Terms
3000 biographies of notable scientific figures
MORE THAN 19,000 downloadable images and animations illustrating key topics
ENGAGING VIDEOS highlighting the life and work of award-winning scientists
SUGGESTIONS FOR FURTHER STUDY and additional readings to guide students to deeper understanding and research
LINKS TO CITABLE LITERATURE help students expand their knowledge using primary sources of information