Search results
Results from the WOW.Com Content Network
The chambered nautilus (Nautilus pompilius), also called the pearly nautilus, is the best-known species of nautilus. The shell, when cut away, reveals a lining of lustrous nacre and displays a nearly perfect equiangular spiral, although it is not a golden spiral. The shell exhibits countershading, being light on the bottom and dark on top. This ...
Nautilus can occasionally be found closer to the surface than 100 metres, however, the minimum depth they can reach is determined by factors such as water temperature and season. [4] All Nautilus species are likely endangered, based on information from Nautilus Pompilius overfishing in the Philippines, which resulted in an 80% decline in the ...
Nautilus belauensis. Much of what is known about the extinct nautiloids is based on what we know about modern nautiluses, such as the chambered nautilus, which is found in the southwest Pacific Ocean from Samoa to the Philippines, and in the Indian Ocean off the coast of Australia. It is not usually found in waters less than 100 meters (328 ...
Allonautilus perforatus, also known as the Bali chambered nautilus, is a species of nautilus native to the waters around Bali, Indonesia. It is known only from drifted shells and, as such, is the least studied of the six recognized nautilus species. Thus, not much is known about it outside of the shell.
Main page; Contents; Current events; Random article; About Wikipedia; Contact us
Their structure lacks the gas-filled chambers present in chambered nautilus shells and is not a true cephalopod shell, but rather an evolutionary innovation unique to the genus. [1] It is used as a brood chamber, and to trap surface air to maintain buoyancy .
Meltzer Woods consists of 48 acres (19 ha) of old-growth forest located in Central Indiana. The woods have been included in Indiana's Classified Forest Program since 1928. They are currently protected by the Meltzer family in partnership with the Central Indiana Land Trust. [2] The woods were designated a National Natural Landmark in 1973. [3]
Allonautilus is now thought to be a descendant of Nautilus, rendering the latter genus paraphyletic. Live individuals of the genus have only been collected in Papua New Guinea and the Solomon Islands. Little is known about their biology because they live in deep waters, [2] whereas the better-understood genus Nautilus lives closer to the surface.