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musselp.bsky.social
TBT. Way back in September 2011, the Mussel of the Month was Unionetta fabagina! #ThrowbackThursday #MusselMemory #MusselOfTheMonth #MUSSELp — musselpdb.org/motm/2011/11... 🧪

Photo by Graf & Cummings
A green-brown pair of valves on a purple background.
September 24, 2026 at 2:38 PM
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September 20, 2026 at 2:12 PM
musselp.bsky.social
TBT. Back in September 2016, the Mussel of the Month was Glebula rotundata! #ThrowbackThursday #MusselMemory #MusselOfTheMonth #MUSSELp — musselpdb.org/motm/2016/16... 🧪

Photo by Graf & Cummings
A pretty blah, round single valve with iridescent nacre on a colorful background.
September 17, 2026 at 10:49 AM
musselp.bsky.social
The September 2026 Mussel of the Month is Hyriopsis myersiana: What’s in a name? Well, Shakespeare, Limnoscaphini doesn’t smell as sweet as Rectidentini.

Read more and subscribe for free at musselproject.substack.com or mussel-project.net #MusselOfTheMonth #MUSSELp 🧪

Photo by Graf & Cummings
Brown alate valves with white nacre on a green and purple background.
September 4, 2026 at 10:50 AM
musselp.bsky.social
TBT. Way back in August 2011, the Mussel of the Month was Friersonia iridella! #ThrowbackThursday #MusselMemory #MusselOfTheMonth #MUSSELp — musselpdb.org/motm/2011/11... 🧪
Photo by Graf & Cummings
A yellow-green pair of valves with fine green rays and iridescent nacre on a red-yellow-green background.
August 27, 2026 at 10:13 AM
musselp.bsky.social
TBT. Back in August 2016, the Mussel of the Month was Callonaia duprei! #ThrowbackThursday #MusselMemory #MusselOfTheMonth #MUSSELp — musselpdb.org/motm/2016/16... 🧪
Photo by Graf & Cummings
A yellowish brown pair of valves with white nacre on a yellowish background.
August 20, 2026 at 10:55 AM
musselp.bsky.social
TBT. Way back in August 2021, the Mussel of the Month was Obovaria olivaria! #ThrowbackThursday #MusselMemory #MusselOfTheMonth #MUSSELp — musselpdb.org/motm/2021/21... 🧪
Photo by Graf & Cummings
Big, thick pair of greenish-brown valves with green rays and white nacre on a pink background.
August 13, 2026 at 10:10 AM
musselp.bsky.social
The August 2026 Mussel of the Month is “Unio” cathaicus: We have to look into the past to bring a perfectly good species name back to our present. Read more and subscribe for free at musselproject.substack.com or mussel-project.net #MusselOfTheMonth #MUSSELp 🧪

Photo by Graf & Cummings
A pair of greenish valves on a black background with two trails of fire.
August 5, 2026 at 2:09 PM
musselp.bsky.social
TBT. Way back in July 2006, the Mussel of the Month was Castalia ambigua! #ThrowbackThursday #MusselMemory #MusselOfTheMonth #MUSSELp — musselpdb.org/motm/2006/06... 🧪
Photo by Graf & Cummings
A brown pair of valves with radial sculpture and white nacre on a brown background.
July 30, 2026 at 10:20 AM
musselp.bsky.social
TBT. Back in July 2011, the Mussel of the Month was Fossula fossiculifera! #ThrowbackThursday #MusselMemory #MusselOfTheMonth #MUSSELp — musselpdb.org/motm/2011/11... 🧪
Photo by Graf & Cummings
A pair of brown bivalve shells with iridescent nacre on a green background.
July 23, 2026 at 11:56 AM
musselp.bsky.social
TBT. Back in July 2016, the Mussel of the Month was Pressidens exanthematicus (née moellendorffi)! #ThrowbackThursday #MusselMemory #MusselOfTheMonth #MUSSELp — musselpdb.org/motm/2016/16... 🧪
A pair of brown valves on a colorful background.
July 16, 2026 at 11:31 AM
musselp.bsky.social
TBT. Back in July 2021, the Mussel of the Month was Ensidens dugasti! #ThrowbackThursday #MusselMemory #MusselOfTheMonth #MUSSELp — musselpdb.org/motm/2021/21... 🧪
A pointy, olive-brown pair of valves with iridescent nacre on a yellow and orange background.
July 9, 2026 at 11:32 AM
musselp.bsky.social
The July 2026 Mussel of the Month is Iridea granosa: A new genus in the Family Hyriidae, but the hyriid phylogeny still has some fuzzy edges. Read more and subscribe for free at musselproject.substack.com or mussel-project.net #MusselOfTheMonth #MUSSELp 🧪
Photo by Graf & Cummings
A bumpy brown shell with iridescent nacre on a colorful background.
July 3, 2026 at 12:11 PM
musselp.bsky.social
TBT. Way back in June 2011, the Mussel of the Month was Ctenodesma scheibeneri! #ThrowbackThursday #MusselMemory #MusselOfTheMonth #MUSSELp — musselpdb.org/motm/2011/11... 🧪

Photo by Graf & Cummings
A dark brown pair of valves with some wavy sculpture and dark green rays on a blue background.
June 25, 2026 at 9:56 AM
musselp.bsky.social
The June 2026 Mussel of the Month is Elliptio complanata: A mussel at the intersection of brooding period & biogeography. Read more and subscribe for free at musselproject.substack.com or mussel-project.net #MusselOfTheMonth #MUSSELp 🧪
A pair of brown valves with slightly purple nacre on a pink and purple background.
June 2, 2026 at 11:23 AM
musselp.bsky.social
TBT. Way back in May 2011, the Mussel of the Month was Obovaria unicolor! #ThrowbackThursday #MusselMemory #MusselOfTheMonth #MUSSELp — musselpdb.org/motm/2011/11... 🧪

Photo by Graf & Cummings
A pair of brown valves with white nacre on a red background.
May 28, 2026 at 10:36 AM
musselp.bsky.social
TBT. Way back in May 2016, the Mussel of the Month was Iheringella semisulcata! #ThrowbackThursday #MusselMemory #MusselOfTheMonth #MUSSELp — musselpdb.org/motm/2016/16... 🧪
Photo by Graf & Cummings
A greenish-yellow pair of valves with faint green rays on a green and yellow background.
May 21, 2026 at 10:39 AM
musselp.bsky.social
TBT. Back in May 2021, the Mussel of the Month was Haasica balzani! #ThrowbackThursday #MusselMemory #MusselOfTheMonth #MUSSELp — musselpdb.org/motm/2021/21... 🧪

Photo by Graf & Cummings
A brown pair of valves with white nacre on a blue snow-flake pattern.
May 14, 2026 at 10:26 AM
musselp.bsky.social
The May 2026 Mussel of the Month is Pseudodon mekongi: At least, that is what it is called today. Read more and subscribe for free at musselproject.substack.com or mussel-project.net #MusselOfTheMonth #MUSSELp 🧪
Photo by Graf & Cummings
A pair of cracked, brown valves with iridescent nacre on a DNA-themed background.
May 7, 2026 at 10:10 AM
musselp.bsky.social
TBT. Way back in April 2006, the Mussel of the Month was Nyassunio nyassaensis! #ThrowbackThursday #MusselMemory #MusselOfTheMonth #MUSSELp — musselpdb.org/motm/2006/06... 🧪
Photo by Graf & Cummings
A wrinkled brown pair of valves with white nacre on a background of freshwater mussel shells.
April 30, 2026 at 10:38 AM
musselp.bsky.social
TBT. Way back in April 2011, the Mussel of the Month was Chambardia wissmanni! #ThrowbackThursday #MusselMemory #MusselOfTheMonth #MUSSELp — musselpdb.org/motm/2011/11... 🧪
Photo by Graf & Cummings
A heavy brown pair of valves with iridescent nacre on a red African pattern.
April 23, 2026 at 5:02 PM
musselp.bsky.social
TBT. Back in April 2021, the Muscle of the Month was the posterior adductor muscle of Theliderma intermedia! — musselpdb.org/motm/2021/21... #ThrowbackThursday #MusselMemory #MusselOfTheMonth #MUSSELp 🧪
April 9, 2026 at 9:38 AM
musselp.bsky.social
The April 2026 Mussel of the Month is Brachyanodon impura: Finally, the genus Anodonta is only for species of Anodonta. Read more and subscribe for free at musselproject.substack.com or mussel-project.net #MusselOfTheMonth #MUSSELp 🧪

Photo by Graf & Cummings
A yellow pair of valves with white nacre on the blue Mexican pattern background.
April 2, 2026 at 10:42 AM
musselp.bsky.social
TBT. Way back in March 2006, the Mussel of the Month was Mutela rostrata! — musselpdb.org/motm/2006/06... #ThrowbackThursday #MusselMemory #MusselOfTheMonth #MUSSELp 🧪

Photo by Graf & Cummings
A greenish pair of valves with pink nacre on a colorful background.
March 26, 2026 at 9:37 AM
musselp.bsky.social
TBT. Back in March 2011, the Mussel of the Month was Sinanodonta woodiana! — musselpdb.org/motm/2011/11... #ThrowbackThursday #MusselMemory #MusselOfTheMonth #MUSSELp 🧪
Photo by Graf & Cummings
A green and yellow pair of valves with white nacre on a green and red background.
March 19, 2026 at 9:34 AM