Species Profile
Environmental Conservation Online System

Dwarf wedgemussel (Alasmidonta heterodon)

Kingdom: Animalia
Class: Bivalvia
Order: Unionoida
Family: Unionidae

Listing Status:   

Lead Region:  Northeast Region (Region 5)
Date Listed: Mar 14, 1990

  • States/US Territories in which the Dwarf wedgemussel is known to occur:  Connecticut , Maryland , Massachusetts , New Hampshire , New Jersey , New York , North Carolina , Pennsylvania , Vermont , Virginia
  • USFWS Refuges in which the Dwarf wedgemussel is known to occur:  SILVIO O. CONTE NATIONAL FISH AND WILDLIFE REFUGE
  • Countries in which the the Dwarf wedgemussel is known to occur:  Canada

» Federal Register Documents

Most Recent Federal Register Documents (Showing 2 of 2 )
Date Citation Page Title
03/14/1990 55 FR 9447 9451 ETWP; Determination of Endangered Status for the Dwarf Wedge Mussel; 55 FR 9447 9451
04/17/1989 54 FR 15236 15240 ETWP; Proposed Endangered Status for the Dwarf Wedge Mussel; 54 FR 15236 15240

» Recovery

Recovery Plan Information Search
Current Recovery Plan(s)
Date Title Plan Action Status Plan Status
02/08/1993 Dwarf Wedge Mussel View Implementation Progress Final
Five Year Review
Date Title
07/25/2007 Dwarf Wedgemussel 5-Year Review

» Critical Habitat

No critical habitat rules have been published for the Dwarf wedgemussel.

» Conservation Plans

No conservation plans have been created for Dwarf wedgemussel

» Petitions

No petition findings have been published for the Dwarf wedgemussel.

» Life History

No Life History information has been entered into this system for this species.

» Other Resources

NatureServe Explorer Species Reports -- NatureServe Explorer is a source for authoritative conservation information on more than 50,000 plants, animals and ecological communtities of the U.S and Canada. NatureServe Explorer provides in-depth information on rare and endangered species, but includes common plants and animals too. NatureServe Explorer is a product of NatureServe in collaboration with the Natural Heritage Network.

ITIS Reports -- ITIS (the Integrated Taxonomic Information System) is a source for authoritative taxonomic information on plants, animals, fungi, and microbes of North America and the world.

Last updated: November 21, 2009