Where has the two-toothed Montagu shell been recorded?

Kurtiella bidentata occurrence evidence comes from 6,504 records in 13 countries and territories, from 1884 to 2025. Most records come from Netherlands.

• 6,504 records
• 13 places
• 69 years recorded
• Bivalvia class

Observation evidence passport

Compare this animal’s observation pattern

When it is recorded

Peak month: April. Records cluster in the months an animal is present and being looked for, so a summer peak can reflect observer effort as much as the animal.

Records over time

Recording effort has risen steeply almost everywhere since the 1990s, so a rising line usually shows more observers rather than more animals.

Where two-toothed Montagu shell has been recorded

The countries below show where occurrence evidence exists for two-toothed Montagu shell. They do not define a complete habitat range: survey effort differs by place, and historical or one-off records can appear alongside repeated presence.