Granosolarium asperum
- Usual depth34–240 m
- Water temperature18–30 °C
- Best monthsJanuary, April, and June
- How commonRare
About this species
Granosolarium asperum is a species of snail. It was first described by Richard Brinsley Hinds in 1844.
Text from the Wikipedia article “Granosolarium asperum”, licensed CC BY-SA 4.0. Read the article
Where and when
Where it has been recorded
Worldwide
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Best months
Worldwide (open data)
- January: 10 records
- February: 8 records
- March: 2 records
- April: 10 records
- May: 1 records
- June: 11 records
- July: 9 records
- August: 5 records
- September: 2 records
- October: 4 records
- November: 6 records
- December: 3 records
Depth and water temperature
Depth
Mostly recorded at 34–240 m · Deepest record: 384 m
Water temperature
Recorded in surface water of 18–30 °C
Names and classification
Names in 1 more languages
- Japanese
- チヂミナワメグルマ
Other scientific names: Architectonica aspera, Claraxis illustris, Heliacus asper, Heliacus dilecta, Mangonuia kerensis, Solarium (Torinia) admirandum, Solarium asperum, Solarium dilectum, Torinia aspera
Similar species
- Variegated sundial
Heliacus variegatus
Giant sundialArchitectonica maxima

Clear sundialArchitectonica perspectiva
Sources and credits
Names and taxonomy: WoRMS (CC BY 4.0) and the GBIF Backbone (CC BY 4.0). Photos: iNaturalist observers, each under the licence shown (CC0, CC BY or CC BY-SA).
- Depth, temperature, months and maps: records from OBIS and GBIF under CC0 or CC BY.
- Descriptions: Wikipedia, licensed CC BY-SA, each linked to its article.
- Conservation status as published by GBIF (IUCN Red List).
- 145 open-data records from 1906 to 1990.
- Species data updated October 26, 2026.
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