nautilida

Chambered Nautilus - Nautilus pompilius

Shells of the Chambered Nautilus, Nautilus pompilius (Nautilidae) are formed by two layers. The external layer has a pattern of irregular brown to reddish brown stripes, while the inner layer (as seen in the photo) is striking white iridescent.

The iridescent material inside nautilus shells is sometimes machined into pleasing shapes and sold as “Osmeña pearl.”

References: [1] - [2]

Photo credit: ©Maciej Bledowski

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Hey guys, super windy night here in Austin, Tx! Just finally got my internet back in time to upload this to the site! You can get prints of it here on my Society 6 page. Hope you enjoy!

The ancient Nautilus. Probably one of the coolest looking critters to jet around in the sea. I’ve also learned while researching this piece, that the coloration of their shells actually helps in camouflaging them in the open ocean(i.e. Dark on top and light when viewed from below). And when you think about it, it’s a brilliant sort of time-delayed camouflage since it’s always growing?! Nature is so f@#king cool!!!

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Palau Nautilus (Nautilus bealuensis)

…is a species of nautilus found in the waters around the island of Palau in the Pacific. Like the more popular chambered nautilus (N.pompilius) the Palau nautilus has a closed umbilicus (space between coils of shell) which is covered with a callus. It differs in its modified radula and raised ridges on its shell, which make a cross-grid texture. The Palau nautilus is an opportunistic feeder and will eat arthropods, carrion and anything else it can stomach.

Phylogeny

Animalia-Mollusca-Cephalopoda-Nautilida-Nautilidae-Nautilus-belauensis

Image Source(s)

Name: Aturia praeziczac
Location: Luxor governorate, Egypt, Esneh Shale
Age: 49-66 million years ago, Paleogene Period

Again and again, different groups of animals end up with the same shape. The fossil in the photograph is Aturia, a nautiloid. Nautiloids and another group, ammonoids, both have spiral-shaped shells and are commonly confused for one another. Here, the similarity doesn’t stop at the spiral.

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Day 034/365 aka 13th February 2015

And again on a bus trip. Wanted to draw another biro animal and accidentally found this cool guy. It’s called Nautilus (in german Perlboote) and is one of the last 6 species of the family of Nautilidae, which was species-rich in primeval times. When you see pictures of nice swirls, those cross-sectioned snail shells are the shells of nautilus.

follow me to my drawing challenge 2015

Oh wow!!
Chambered Nautilus - Nautilus pompilius
Shells of the Chambered Nautilus, Nautilus pompilius (Nautilidae) are formed by two layers. The external layer has a pattern of irregular brown to reddish brown stripes, while the inner layer (as seen in the photo) is striking white iridescent.
The iridescent material inside nautilus shells is sometimes machined into pleasing shapes and sold as “Osmeña pearl.”

Photo credit: #MaciejBledowski #wwsbeauty #wwsnature