• Home
• Vertebrates
  • All
  • Amphibians
  • Birds
  • Fish
  • Mammals
  • Reptiles
  • Reptiles and Amphibians
  • Sharks and Rays
• Insects
  • All
  • Ants
  • Beetles
  • Bees
  • Butterflies
  • Cicadas
  • Damselflies
  • Dragonflies
  • Dragonflies and Damselflies
  • Fleas
  • Flies (Diptera)
  • Grasshoppers and Crickets
  • Hornets and Wasps
  • Katydids
  • Mosquitoes
  • Moths
  • Planthoppers
  • Robber Flies
  • Sawflies, Horntails, Wood Wasps
  • Scale Insects
  • Stoneflies
  • Tiger Beetles
  • Treehoppers
  • True Bugs (Hemiptera)
• Other Invertebrates
  • Amphipods
  • Bivalves - Freshwater
  • Bivalves - Saltwater
  • Crabs, Lobsters, and Shrimp
  • Crayfish
  • Earthworms
  • Gastropods
  • Harvestmen
  • Isopods
  • Jellyfish
  • Nematodes
  • Proturans
  • Sea Urchins
  • Spiders
  • Springtails
  • Ticks
• Plants
  • Browse by family
  • Aster Family
  • Bryophytes
  • Carnivorous Plants
  • Clubmosses, Quillworts, Spikemosses
  • Ferns
  • Grasses
  • Iris Family
  • Milkweed Family
  • Mosses
  • Orchids
  • Pea Family
  • Rose Family
  • Sedges and Rushes
• Fungi/Other
  • Algae - Freshwater
  • Algae - Marine Macroalgae
  • Algae - Marine Microalgae
  • Fungi - All
  • Fungi - Browse by family
  • Fungi - Ascomycota
  • Fungi - Basidiomycota
  • Lichens
  • Slime Molds
• Explore
  • Bibliography
  • Maryland Quad Map
  • Maryland Quad Heat Map
  • Top 100 Contributors by Species
  • Top 100 Contributors by Species (2024)
  • Top 100 Contributors by Records
  • Recent Discoveries (this month)
  • iNaturalist Integration Summary
  • MBP Brochure
  • Partnerships
  • Editors
  • Photographers
  • Get Involved
  • FAQs
  • About Records
  • Dedication
• Links
  • MBP on Facebook
  • MBP on Twitter
  • MBP on Instagram
  • MBP project at iNaturalist
  • Share photos on Flickr
  • MBP Google Group
  • Maryland Plant Atlas
  • MD/DCRC Resources
  • Stewart and Robbins (1958)
  • eBird
• Sites
  • Andelot Farm
  • Chino Farms
  • Dans Rock Bird Count
  • Fort Smallwood Park
  • Horn Point Laboratory
  • Howard County Conservancy
  • Jemicy School
  • Rocky Gap State Park
  • Turkey Point Bird Count
  • Weinberg Park

Maryland Checklist - Family: Unionidae - all-time (Total: 20)   

	Photos	Common Name	Genus	Species	Records	Category	Family	Order	Class	Kingdom
1		Susquehanna Elktoe	Alasmidonta	marginata	0	Freshwater Bivalves	Unionidae	Unionoida	Bivalvia	Animalia
2		Creeper	Strophitus	undulatus	16	Freshwater Bivalves	Unionidae	Unionoida	Bivalvia	Animalia
3		Brook Floater	Alasmidonta	varicosa	35	Freshwater Bivalves	Unionidae	Unionoida	Bivalvia	Animalia
4		No Common Name	Lampsilis	sp.	1	Freshwater Bivalves	Unionidae	Unionoida	Bivalvia	Animalia
5		Carolina Lance	Elliptio	angustata	0	Freshwater Bivalves	Unionidae	Unionoida	Bivalvia	Animalia
6		Northern Lance	Elliptio	fisheriana	5	Freshwater Bivalves	Unionidae	Unionoida	Bivalvia	Animalia
7		Plain Pocketbook	Lampsilis	cardium	5	Freshwater Bivalves	Unionidae	Unionoida	Bivalvia	Animalia
8		Eastern Lampmussel	Lampsilis	radiata	24	Freshwater Bivalves	Unionidae	Unionoida	Bivalvia	Animalia
9		Tidewater Mucket	Atlanticoncha	ochracea	17	Freshwater Bivalves	Unionidae	Unionoida	Bivalvia	Animalia
10		Eastern Floater	Pyganodon	cataracta	18	Freshwater Bivalves	Unionidae	Unionoida	Bivalvia	Animalia
11		Paper Pondshell	Utterbackia	imbecillis	3	Freshwater Bivalves	Unionidae	Unionoida	Bivalvia	Animalia
12		Dwarf Wedgemussel	Alasmidonta	heterodon	17	Freshwater Bivalves	Unionidae	Unionoida	Bivalvia	Animalia
13		Yellow Lance	Elliptio	lanceolata	5	Freshwater Bivalves	Unionidae	Unionoida	Bivalvia	Animalia
14		Triangle Floater	Alasmidonta	undulata	30	Freshwater Bivalves	Unionidae	Unionoida	Bivalvia	Animalia
15		Alewife Floater	Utterbackiana	implicata	3	Freshwater Bivalves	Unionidae	Unionoida	Bivalvia	Animalia
16		Eastern Elliptio	Elliptio	complanata	38	Freshwater Bivalves	Unionidae	Unionoida	Bivalvia	Animalia
17		Atlantic Spike	Elliptio	producta	24	Freshwater Bivalves	Unionidae	Unionoida	Bivalvia	Animalia
18		Yellow Lampmussel	Lampsilis	cariosa	12	Freshwater Bivalves	Unionidae	Unionoida	Bivalvia	Animalia
19		Green Floater	Lasmigona	subviridis	19	Freshwater Bivalves	Unionidae	Unionoida	Bivalvia	Animalia
20		Eastern Pondmussel	Sagittunio	nasutus	5	Freshwater Bivalves	Unionidae	Unionoida	Bivalvia	Animalia