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Molecular clock analyses indicated that Dactyloradula diverged from other Radula species during the Mesozoic era, positioning it as an ancient genus-level lineage. The estimated age of divergence placed it as old as many flowering plant families, unusual for what was previously considered just one species within a larger genus.
The radula (US: / ˈ r æ dʒ ʊ l ə /; pl.: radulae or radulas) [1] is an anatomical structure used by mollusks for feeding, sometimes compared to a tongue. [2] It is a minutely toothed, chitinous ribbon, which is typically used for scraping or cutting food before the food enters the esophagus .
Radula acutiloba Steph. Radula aguirrei R.M.Schust. ex M.A.M.Renner Radula allisonii Castle Radula amentulosa Mitt. Radula amoena Herzog Radula anceps Sande Lac. Radula aneurysmalis (Hook.f. & Taylor) Gottsche, Lindenb. & Nees Radula angulata Steph. Radula anisotoma M.A.M.Renner Radula appressa Mitt. Radula aquilegia (Hook.f. & Taylor) Gottsche ...
The most common compounds found in Radula species are 3,5-dihydroxy-2-(3-methyl-2-butenyl)bibenzyl and 2-geranyl-3,5-dihydroxybibenzyl, which often form the basic structure for more complex molecules in these plants. [17] Of particular interest is the presence of compounds similar to those found in cannabis (cannabinoids) in some Radula species
Radula jonesii is a species of liverwort in the family Radulaceae, [2] first described in 1988 from specimens collected in the Anaga Mountains of Tenerife. Endemic to Macaronesia, this dark to olive-green liverwort is known from five locations on Madeira Island and one location on Tenerife, where it grows as both an epiphyte on trees such as Laurus novocanariensis and as a lithophyte on shaded ...
Cladoradula perrottetii grows as an epiphyte (a plant that grows on other plants) in moist, shaded environments. It has been found in several Asian countries including: India (Eastern Himalayas, Western Ghats, Central India, and the Andaman and Nicobar Islands), China, Indonesia, Japan, Nepal, Taiwan, and Thailand.
Radula visianica is a small, green to yellowish-green plant that grows in patches. Individual shoots are typically 0.3–1.5 mm (0.012–0.059 in) wide and can reach up to 20 mm (0.79 in) in length.
The radula is a chitinous ribbon-like structure containing rows of microscopic teeth. With this the snail scrapes at food, which is then transferred to the digestive tract. In a very quiet setting, a large land snail can be heard 'crunching' its food: the radula is tearing away at the surface of the food that the snail is eating.