MUSSEL Project
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MUSSEL Project
@musselp.bsky.social
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The MUSSEL Project, or MUSSELp for short, is an online database of taxonomic and specimen data for freshwater bivalves. The "Mussel of the Month" posts have been a regular feature of the site for over 20 years. https://musselpdb.org
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TBT. Back in January 2021, the Mussel of the Month was Solenaia emarginata! — musselpdb.org/motm/2021/21... #ThrowbackThursday #MusselMemory #MusselOfTheMonth #MUSSELp 🧪

Photo by Graf & Cummings
An elongate freshwater bivalve shell on a colorful background
January 8, 2026 at 11:23 AM
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The January 2026 Mussel of the Month is Leila blainvilliana. Leila blainvilliana has peculiar posterior “siphons,” distinct from those of typical neotropical Mycetopodidae.

Learn more and subscribe for FREE at musselproject.substack.com #MusselOfTheMonth #MUSSELp 🧪

Photo by Graf & Cummings
The January 2026 Mussel of the Month is Leila blainvilliana
January 1, 2026 at 4:49 PM
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TBT. Way back in December 2010, the Mussel of the Month was Truncilla truncata! — musselpdb.org/motm/2010/10... #ThrowbackThursday #MusselMemory #MusselOfTheMonth #MUSSELp 🧪

Photo by Graf & Cummings
Back in December 2010, the Mussel of the Month was Truncilla truncata.
December 25, 2025 at 11:38 AM
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TBT. Way back in December 2015, the Mussel of the Month was Pronodularia japanensis! — musselpdb.org/motm/2015/15... #ThrowbackThursday #MusselMemory #MUSSELp #MusselOfTheMonth 🧪

Photo by Graf & CummingsBa
Back in December 2015, the Mussel of the Month was Pronodularia japanensis
December 18, 2025 at 11:06 AM
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TBT. Back in December 2020, the Mussel of the Month was Platynaias (née Lasmigona) subviridis! — musselpdb.org/motm/2020/20... #ThrowbackThursday #MusselMemory #MUSSELp #MusselOfTheMonth 🧪

Photo by Graf & Cummings
Back in December 2020, the Mussel of the Month was Platynaias subviridis
December 11, 2025 at 11:46 AM
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The December 2025 Mussel of the Month is Mutela dubia. Mutela dubia (Iridinidae) from Africa, like so many freshwater mussels, has been “super-nominated.” Learn more and subscribe at musselproject.substack.com. #MusselOfTheMonth #MUSSELp 🧪

Photo by Graf & Cummings
The December 2025 Mussel of the Month is Mutela dubia (Gmelin, 1791)
December 4, 2025 at 10:39 AM
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TBT. Way back in November 2010, the Mussel of the Month was Megalonaias nervosa! — musselpdb.org/motm/2010/10... #ThrowbackThursday #MusselMemory #MUSSELp #MusselOfTheMonth 🧪

Photo by Graf & Cummings
Back in November 2010, the Mussel of the Month was Megalonaias nervosa.
November 27, 2025 at 10:32 AM
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TBT. Back in November 2015, the Mussel of the Month was Nephritica poeyana! — musselpdb.org/motm/2015/15... #ThrowbackThursday #MusselMemory #MUSSELp #MusselOfTheMonth 🧪

Photo by Graf & Cummings
Back in November 2015, the Mussel of the Month was Nephritica poeyana
November 20, 2025 at 2:01 PM
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TBT. Back in November 2020, the Mussel of the Month was Atlanticoncha ochracea! — musselpdb.org/motm/2020/20... #ThrowbackThursday #MusselMemory #MusselOfTheMonth #MUSSELp 🧪

Photo by Graf & Cummings
Back in November 2020, the Mussel of the Month was Atlanticoncha ochracea
November 13, 2025 at 11:27 AM
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The November 2025 Mussel of the Month is Schistodesmus xinyuensis! — musselpdb.org, musselproject.substack.com #MusselOfTheMonth #MUSSELp 🧪

Photo by Graf & Cummings
The November 2025 Mussel of the Month is Schistodesmus xinyuensis
November 6, 2025 at 2:51 PM
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Way back in October 2010, the Mussel of the Month was Recidens sumatrensis (except we called in R. lingulatus)! — musselpdb.org/motm/2010/10... #ThrowbackThursday #MusselMemory #MUSSELp #MusselOfTheMonth 🧪

Photo by Graf & Cummings
Back in October 2010, the Mussel of the Month was Rectidens sumatrensis
October 30, 2025 at 6:16 PM
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Check out the latest episode of The Whoo! from the MUSSEL Project! KSC & DLG discuss their new book, Freshwater Mussels of Central America by Cummings, Graf, Pfeiffer & Tiemann. www.youtube.com/watch?v=Qf8D... #MUSSELp 🧪
The Whoo! Episode 2025-2
YouTube video by MUSSELp
www.youtube.com
October 18, 2025 at 11:23 AM
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Back in October 2015, the Mussel of the Month was Lepidodesma languilati! — musselpdb.org/motm/2015/15... #MusselMemory #ThrowbackThursday #MusselOfTheMonth #MUSSELp 🧪

Photo by Graf & Cummings
Back in October 2015, the Mussel of the Month was Lepidodesma languilati
October 16, 2025 at 1:11 PM
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#MusselMemory #ThrowbackThursday Back in October 2020, the #MUSSELp #MusselOfTheMonth was Bineurus mouhotii! — musselpdb.org/motm/2020/20... 🧪

Photo by Graf & Cummings
Back in October 2020, the Mussel of the Month was Bineurus mouhotii
October 9, 2025 at 1:20 PM
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The October 2025 #MUSSELp #MusselOfTheMonth is Anodontites lurulenta from Central America! — musselpdb.org, musselproject.substack.com 🧪

Photo by Graf & Cummings
The October 2025 Mussel of the Month is Anodontites lurulenta!
October 2, 2025 at 11:00 AM
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#MusselMemory #ThrowbackThursday Way back in September 2010, the #MUSSELp #MusselOfTheMonth was Hemistena lata! — musselpdb.org/motm/2010/10... 🧪

Photo by Graf & Cummings
Back in September 2010, the Mussel of the Month was Hemistena lata!
September 25, 2025 at 10:18 AM
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#MusselMemory #ThrowbackThursday Back in September 2015, the #MUSSELp #MusselOfTheMonth was Venustaconcha ellipsiformis! — musselpdb.org/motm/2015/15... 🧪

Photo by Graf & Cummings
Back in September 2015, the Mussel of the Month was Venustaconcha ellipsiformis
September 18, 2025 at 12:38 PM
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#MusselMemory #ThrowbackThursday Back in September 2020, the #MUSSELp #MusselOfTheMonth was Diplodon paranensis! — musselpdb.org/motm/2020/20... 🧪

Photo by Graf & Cummings
Back in September 2020, the Mussel of the Month was Diplodon paranensis!
September 11, 2025 at 1:58 PM
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The September 2025 #MUSSELp #MusselOfTheMonth is Ortmanniana pectorosa! — musselpdb.org, musselproject.substack.com 🧪

Photo by Graf & Cummings
The September 2025 Mussel of the Month is Ortmanniana pectorosa
September 4, 2025 at 4:08 PM
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#MusselMemory #ThrowbackThursday Way back in August 2010, the #MUSSELp #MusselOfTheMonth was Anodontites crispata! — mussel-project.uwsp.edu/motm/2010/10... 🧪

Photo by Graf & Cummings
Back in August 2010, the Mussel of the Month was Anodontites crispata Bruguiere, 1792
August 28, 2025 at 12:07 PM
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#MusselMemory #ThrowbackThursday Back in August 2015, the #MUSSELp #MusselOfTheMonth was Lens contradens! — mussel-project.uwsp.edu/motm/2015/15... 🧪

Photo by Graf & Cummings
Back in August 2015, the Mussel of the Month was Lens contradens (Lea, 1838).
August 21, 2025 at 2:10 PM
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#MusselMemory #ThrowbackThursday Back in August 2020, the #MUSSELp #MusselOfTheMonth was Popenaias berezai! — mussel-project.uwsp.edu/motm/2020/20... 🧪

Photo by Graf & Cummings
Back in August 2020, the Mussel of the Month was Popenaias berezai!
August 14, 2025 at 10:32 AM
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The August 2025 #MUSSELp #MusselOfTheMonth is Pustulosa nodulata! — mussel-project.uwsp.edu/motm/2025/25..., musselproject.substack.com 🧪

Photo by Graf & Cummings
The August 2025 Mussel of the Month is Pustules nodulata
August 7, 2025 at 4:28 PM
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#ThrowbackThursday Way back in July 2010, the #MUSSELp #MusselOfTheMonth was Coelatura lobensis! — mussel-project.uwsp.edu/motm/2010/10... 🧪

Photo by Graf & Cummings
Back in July 2010, the Mussel of the Month was Coelatura lobensis
July 24, 2025 at 12:47 PM
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#ThrowbackThursday Back in July 2015, the #MUSSELp #MusselOfTheMonth was Actinonaias sapotalensis! — mussel-project.uwsp.edu/motm/2015/15... 🧪

BacPhoto by Graf & Cummings
Back in July 2015, the Mussel of the Month was Actinonaias sapotalensis
July 17, 2025 at 1:49 PM