skip to content

#4597 · 🐌 snails, slugs & other molluscs

False Angelwing

🇳🇱 Amerikaanse boormossel ·Petricolaria pholadiformis

🐌 Snails, slugs & other molluscs 📍 in the Netherlands (introduced)
False Angelwing, photo 1 of 7
1/7 © wsimmons · CC BY-NC 4.0

what is it?

Petricolaria pholadiformis , common names "false angel wing" (United States) and "American piddock" (UK), is a species of saltwater clam, a marine bivalve mollusk in the family Petricolidae, which is related to the large family Veneridae, the Venus clams.

base stats

  • NL sightings 152iNaturalist, research grade
  • worldwide 2,344iNaturalist observations

Bars compare against all animals on log scales: up to 300,000 Dutch and 600,000 worldwide sightings (the most-seen species), 150 t (blue whale), 30 m and 400 years (Greenland shark).

fun facts

  • Spotted 152 times in the Netherlands on iNaturalist: the #29 most seen of the snails, slugs & other molluscs in NL.
  • 2,344 observations worldwide on iNaturalist.
  • Scientifically named by Jean-Baptiste de Lamarck in 1818 (208 years ago).
  • Not originally Dutch: it was introduced to the Netherlands.

fact sheet

English
False Angelwing
Nederlands
Amerikaanse boormossel
scientific name
Petricolaria pholadiformis
class
Bivalvia
order
Venerida
family
Veneridae
in NL
introduced
sightings in NL
152
sightings in Europe
548
sightings worldwide
2,344
GBIF records in NL
43,063
weight
—
length
—
lifespan
—
named
1818 by Jean-Baptiste de Lamarck

relatives· Veneridae

Sources: iNaturalist taxon 227597, Wikidata Q3806139, GBIF 2287615, Wikipedia (EN), Wikipedia (NL). Intro text from Wikipedia (CC BY-SA 4.0).Updated 2026-10-24.

stan runge e33afe5 source