CreatureData

Coin oyster

Hyotissa numisma (Lamarck, 1819)

Status not recordedmolluscs

The coin oyster (Hyotissa numisma) is a species in the family Gryphaeidae, order Ostreida.

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Quick facts about the coin oyster

Weight
Not recorded
Length
Not recorded
Lifespan
Not recorded
Main food
Not recorded
Habitat
Not recorded
Young per litter or clutch
Not recorded
Conservation status
Not recorded
Countries on record
Not recorded

Where does the coin oyster live?

Not recorded

Is the coin oyster endangered?

No conservation assessment is recorded for this species in our sources. That is not the same as being safe: it has not been matched to an assessment.

How is the coin oyster classified?

  1. kingdomAnimalia
  2. phylumMollusca
  3. classBivalvia
  4. orderOstreida
  5. familyGryphaeidae
  6. genusHyotissa
  7. SpeciesHyotissa numisma (Lamarck, 1819)

Synonyms Crassostrea inaequivalvis, Dendostrea inaequivalvis, Ostraea cerata, Ostraea hanleyana, Ostraea inaequivalvis, Ostraea lentiginosa, Ostrea cerata, Ostrea hanleyana, Ostrea hanleyi, Ostrea inaequivalvis, Ostrea lentiginosa, Ostrea numisma, Ostrea procles, Ostrea thaanumi, Ostrea violacea, Parahyotissa numisma, Pycnodonta numisma

Other names and names in other languages (3)
  • Flattened oysterEnglish
  • ヒラガキJapanese
  • 둥근동전굴Korean

Catalogue of Life

Relatives of the coin oyster

Other species in the same genus Hyotissa.

CompareCoin oyster vs Flattened oysterCoin oyster vs Atlantic foam oysterCoin oyster vs Imbricate oysterCoin oyster vs Hyotissa guppyi

Common questions

Answered only where our data holds the answer.

What kind of animal is the coin oyster?

The coin oyster (Hyotissa numisma) belongs to the family Gryphaeidae in the order Ostreida.

Sources and how to cite this page

Data as of 2026-11-11. How this page is put together.

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APA

CreatureData. (2026). Coin oyster (Hyotissa numisma). Retrieved from https://creaturedata.com/animals/coin-oyster

MLA

“Coin oyster (Hyotissa numisma).” CreatureData, 2026, https://creaturedata.com/animals/coin-oyster.

BibTeX
@misc{coin_oyster_2026,
  title = {Coin oyster (Hyotissa numisma)},
  author = {{CreatureData}},
  year = {2026},
  url = {https://creaturedata.com/animals/coin-oyster},
  note = {Data as of 2026-11-11}
}