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.
Upland Pillsnail
(Say, 1824)
Euchemotrema fraternum
Class:
Order:
Family:
Gastropoda
Stylommatophora
Polygyridae
ANSP 20194
Ecological Information
Native/Inavsive:
Native
Nature Serve Conservation Status:
G5: Secure
Median Size:
6.3
Height:
Width:
9.5
Taper:
0.5
Taxonomic Information
Helix fraterna
Original Combination:
Etymology
Original Description:
Shell convex, brownish-horn colour, minutely hirsute; whorls five, rounded; umbilicus partially or entirely closed by the termination of the labrum; region of the umbilicus indented; aperture much contracted by the labrum; labrum reflected, white, unarmed; its outer edge not projecting beyond the curve of the whorl; its inferior angle extends to the centre of the base of the shell; labium with a strong, prominent, oblique, compressed, white tooth. Breadth one-third of an inch. Inhabits Pennsylvania.
Original Description Citation:
Say, T. (1824). Class Mollusca. In: Narrative of an expedition to the source of St. Peter's River, Lake Winnepeek, Lake of the Woods, &c. &c. performed in the year 1823, by order of The Hon. J.C. Calhoun, Secretary of War, under the command of Stephen H. Long, Major U. S. T. E. compiled from the notes of Major Long, Messrs Say, Keating, and Calhoun, by William H. Keating, A. M. &c. H.C. Carey & I. Lea, Philadelphia. 2: 256-266, plates 14-15, available online at http://biodiversitylibrary.org/page/13640689
Citations
-
-
-