Crusty nautilus
Allonautilus scrobiculatus
- Water temperature29–30 °C
- Best monthsJune, August, and November
- How commonRare
About this species
Allonautilus scrobiculatus, also known as the crusty nautilus or fuzzy nautilus, is a species of nautilus native to the waters around New Guinea, specifically New Britain and Milne Bay, and the Solomon Islands. A. scrobiculatus is recognizable by the large open umbilicus, which is around 20% of the shell diameter at its widest point. This species, along with the closely related A. perforatus, were originally placed in the genus Nautilus, but have recently been given their own genus on the account of significant morphological differences. The most obvious are features of the shell, including crease and an encrusting layer (periostracum) that covers most of the shell. Gills and reproductive structures also differ significantly from members of the genus Nautilus. The shell is usually up to around 18 cm in diameter, although the largest specimen ever recorded measured 21.5 cm. The species was thought to have gone extinct after 1986, but was rediscovered in July 2015.
Text from the Wikipedia article “Allonautilus scrobiculatus”, licensed CC BY-SA 4.0. Read the article
Where and when
Where it has been recorded
Worldwide
Loading the map
Best months
Worldwide (open data)
- January: 0 records
- February: 0 records
- March: 0 records
- April: 0 records
- May: 0 records
- June: 1 records
- July: 0 records
- August: 1 records
- September: 0 records
- October: 0 records
- November: 1 records
- December: 0 records
Depth and water temperature
Water temperature
Recorded in surface water of 29–30 °C
Names and classification
- English
- Crusty nautilus, Salomon's nautilus, Fuzzy Nautilus, Golden Nautilus
Names in 4 more languages
- German
- Salomons-Perlboot
- Spanish
- Nautilus de costra
- Japanese
- ヒロベソオウムガイ
- Thai
- หอยงวงช้างขนปุย
Other scientific names: Nautilus scrobiculatus
Similar species
- Chambered nautilus
Nautilus pompilius
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).
- 9 open-data records from 1971 to 2003.
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