Malacology
Malacology is the study of mollusks. This includes animals like octopus, snails, slugs, and clams. It is the second largest phylum of animals, making them one of the most successful groups on the planet. There are over 80,000 described species of mollusks with many more left to be discovered. Mullusca is composed of 8 recognized classes including Cephalopoda, Gastropoda, Polyplacophora, Scaphapoda, Monoplacophorans, the Aplacophorans, Caudofoveata and Solenogastres, and Bivalvia.
Northern Three-Tooth
(Say, 1817)
Triodopsis tridentata
Class:
Order:
Family:
Gastropoda
Stylommatophora
Polygyridae
ANSP 105972 [neotype]
Ecological Information
Native/Inavsive:
Native
Nature Serve Conservation Status:
G5: Secure
Median Size:
7
Height:
Width:
12.8
Taper:
0.7
Taxonomic Information
Helix tridentata
Original Combination:
tri = three, dentata = teeth
Etymology
Original Description:
Shell depressed, spire very little raised, brownish or born colour ; whorls five, crossed by numerous raised equidistant acute lines seperated by regular grooves ; aperture lunate, three toothed; teeth placed triangularly, one on the pillar lip situated diagonally; outer lip abruptly contracting the aperture, widely reflected and white, fernished with two of the teeth resembling projecting angles. Umbilicus moderate. Half an inch wide. Inhabits the middle states.
Original Description Citation:
Say, T. (1817). Conchology. - In: Nicholson, W.: American edition of the British Encyclopedia, or, dictionary of arts and sciences comprising an accurate and popular view of the present improved state of human knowledge. First Edition, A-3 - C-6 [= 1-20], pl. [1-4]. page(s): [unpaginated], pl. 2, fig. 1
Citations
-
-
-