ammonite: Per Wikipedia the ammonites went extinct with Dinosaurs 65 million years ago. Ammonites survived until the end of the Cretaceous period in a sea that covered what is now Alberta. Canada and Montana, USA. These ammonites were transformed into the rare gem known as Ammolite.
Spiral mosaic This one will keep you guessing. Some are spiral staircases some are not. Are you sure you know what you are looking at? Collection of spirals drawn from my favorites. Please view these images individually. You will meet some fine photographers. 1. Fior de' spirale, 2. P6030018_opt, 3. Spirals, 4. Shell or Fractal?, 5. clef, 6. iris, 7. Nautilus , 8. nautilus, 9. Untitled, 10. Sea Shell, 11. celebrating my 5th Flickr birthday (explored), 12. On the top of the @, 13. Shell
Pick up a pinecone...You may find eight spirals winding up to the left and 13 spirals winding up to the right, or 13 left and 21 right spirals, or other pairs of numbers. The striking fact is that these pairs of numbers are adjacent numbers in the famous Fibonacci series: 1, 1, 2, 3, 5, 8, 13, 21... The phenomenon is well known and called phyllotaxis...― Stuart A. Kauffman
Pine Cone by Michæl Paukner | www.substudio.com - "an illustration of the seed bearing scales on the base of a typical pine cone. It shows the golden ratio spirals clearly. The number of spirals in either direction are two consecutive Fibonacci numbers: 13 clockwise spirals and 8 counter clockwise spirals."