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In anatomy, a heterodont (from Greek, meaning 'different teeth') is an animal which possesses more than a single tooth morphology. [2] [3] In vertebrates, heterodont pertains to animals where teeth are differentiated into different forms. For example, members of the Synapsida generally possess incisors, canines ("dogteeth"), premolars, and molars.
- Heteroconchia
Heterodonta. Heteroconchia is a taxonomic infraclass of...
- Euheterodonta
Euheterodonta is an subterclass of Mollusca in the class...
- Heteroconchia
May 8, 2018 · heterodont. 1. (invertebrate) Applied to a hinge dentition occurring in the Bivalvia, where teeth of differing sizes occur in the hinge plate. The teeth are differentiated into cardinal teeth, which occur beneath the umbo, and lateral teeth, which occur posteriorly and anteriorly to the umbo. 2. (vertebrate) Possessing teeth that are ...
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Among the distinguishing characters of the genus are two series of stamens totaling twice the number of petals; free or nearly free petals (not joined in a tube); a stout rhizome from whose axils the flowering stems rise; and a basal rosetteof leaves. This genus contains the only species of Crassulaceae that have unisexual flowers.
Although Linnaeus distinguished Rhodiola from Sedum on the basis of being dioecious, it was later submerged in the latter genus until the twentieth century, when it was restored, on the basis of well developed rhizomes and annual flowering stems, arising from axils of the scaly radical leaves. This separation was subsequently confirmed by molecular...
Dioecy, having separate male and female flowers, has evolved at least three times in the genus, and reversals to a hermaphrodite condition have also occurred, which is a rare occurrence in flowering plants. It has been suggested that dioecy in the genus may correlate with abiotic pollination in the cold environment.
Rhodiola is used to promote a variety of uses, specifically in physical health, with the plant being used historically in medicine throughout Europe.A number of species are grown as ornamentals, but growing them is difficult outside their native subarctic and alpine climates. In TCM, Rhodiola is known as Hong Jing Tian (红景天)and is used for fatigue,...
- Rhodiola, L.
- Saxifragales
Mar 9, 2024 · Adjective [ edit] heterodont (not comparable) ( zootomy) Having teeth of different types (like most mammals ). Antonym: homodont. Coordinate term: isodont. ( malacology) Of bivalves or their hinge teeth: having two to three wedge-shaped cardinal teeth set in the centre near the umbones, generally also with elongated lateral teeth on the ...
Heterodon is a genus of harmless colubrid snakes endemic to North America. [1] They are stout with upturned snouts and are perhaps best known for their characteristic threat displays. Three species are currently recognized. [2] Members of the genus are commonly known as hognose snakes, hog-nosed snakes, [3] North American hog-nosed snakes, [2 ...
