Ammonites lived throughout the seas and swam by squirting water in one direction, to push themselves along. Ammonites appeared 425 million years ago and were very common ocean animals throughout the age of the dinosaurs. They died out 66 million years ago.
Perisphinctes is an extinct genus of ammonite that lived in the lower Jurassic 163 million years ago.
Ammonites are one of the most recognisable fossils around, this is due to their familiar spiral shape shell, reminiscent of what we know as a snail shell, though these creatures are not related to snails at all! They were marine animals, present between 240 – 65 million years ago, who had a coiled external shell like that of the modern nautilus, and although they resembled a modern-day nautilus, these molluscs are more closely related to living coleoids i.e. octopuses, squid, and cuttlefish.
These creatures varied in size, ranging from only a few millimeters to some fossils being found measuring a whopping 8 feet 96 inches.
All of our Fossils are 100% Genuine Specimens & come with a Certificate of Authenticity
Age: Lower Jurassic
Location: Tulear, Madagascar
Size (picture scale cube=1cm): 16 x 40 x 45mm (0.63 x 1.57 x 1.77 inches)
ACTUAL AS SEEN: The image shows the EXACT specimen you will receive. The specimen has been carefully hand selected and photographed. Measurements are as accurate as possible, though be aware measuring precise dimensions can be difficult from irregular shaped items. Whilst we portray colours as close to life-like as we can, colours will vary if taken in sunlight, indoors, from monitor to monitor and device to device. Once this specimen is sold, we will update this listing with new similar selected item, with a new photo and dimensions.