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- ›Unionoidea
- ›River Mussels
- ›Unioninae
- ›Anodontini
- ›Strophitus

Creeper
Strophitus undulatus
Strophitus undulatus is a species of mussel in the Unionidae, the river mussels. It is native to eastern Canada and the eastern United States. Its common names include creeper, squawfoot, sloughfoot, and strange floater.
This mussel has a somewhat flattened, smooth, oval shell which is thin in young animals and becomes thicker with age. It is green, brown, or black in color with pink to orange nacre. It grows up to 10.2 centimetres (4.0 in) long. The beak is ridged.
Where it lives
Recorded sightings
—
geo-referenced records in GBIF, from museums, herbaria and field observers.
Drag the globe to turn it. Dots are where records exist, not a range map; darker means more records.
In the old herbals & bestiaries

The Natural History of Carolina, Florida and the Bahama Islands, Vol. 1
Mark Catesby · 1777 · p.212

François Le Vaillant — Histoire naturelle des promerops et des guêpiers (1807)
François Le Vaillant · 1807 · p.169

François Le Vaillant — Histoire naturelle des promerops et des guêpiers (1807)
François Le Vaillant · 1807 · p.175

History of Animals, Book I: On Viviparous Quadrupeds
Conrad Gessner · 1554 · p.869

History of Animals, Book I: On Viviparous Quadrupeds
Conrad Gessner · 1554 · p.430

Historiae Animalium Liber III: De Avium Natura
Conrad Gesner · 1555 · p.724

Compendium of Materia Medica
李時珍 · 1596 · p.20

Ornithologiae: de avibus historiae libri XII
Ulisse Aldrovandi · 1599 · p.889

Ornithologiae: de avibus historiae libri XII
Ulisse Aldrovandi · 1599 · p.888

Ornithologiae: de avibus historiae libri XII
Ulisse Aldrovandi · 1599 · p.871

Ornithology
Ulisse Aldrovandi · 1599 · p.904

Sancai Tuhui (Vol. 97)
王圻, 王思義 · 1607 · p.94
In the stacks
Searching the stacks…
Every page naming Strophitus undulatus in the Biodiversity Heritage Library →
This page is assembled live from iNaturalist, GBIF, Wikipedia, the Source Library and the Internet Archive. It is not yet part of the hand-edited codex. iNaturalist taxon 129600.