Thin-shelled Littleneck
NameThin-shelled Littleneck
Scientific NameProtothaca tenerrima
Common NameThin-shelled Littleneck
FamilyVeneridae
GenusProtothaca
Speciestenerrima
Geographic DistributionPacific coast of North America, ranging from British Columbia, Canada, south to Baja California, Mexico.
Habitatintertidal
Average Size (mm)Typically grows up to 70-80 mm (7-8 cm) in length, though some individuals may be larger. The specimen in the image appears to be in this size range.
Identifying FeaturesDistinguished by its relatively thin shell (compared to other littlenecks), prominent and regular concentric growth lines, and an oval to sub-quadrate shape. The pallial sinus is deep and U-shaped.
Dietfilter-feeder
Raritycommon
Author CitationCarpenter, 1857
Description
A bivalve mollusk characterized by a relatively thin, oval to sub-quadrate shell. The shell surface exhibits prominent, regular concentric growth lines (ribs). Its coloration is typically a dull grayish-brown or tan, sometimes with darker bands. The specimen in the image shows a broken section, highlighting its thin shell structure.
