The capitals topping the pilasters sported volutes in the shape of ammonite fossils. It may contain ammonite and gastropod fossils in some nodular layers. It includes well-preserved ammonite fossils. It was home to a rich ammonite and ichthyosaur fauna. It is also the most fossiliferous (especially for ammonite fossils). There have been reliable reports of ammonite fossils from the early Paleocene. It was here that he found his first fossil ammonite, in Jurassic rocks. An indeterminate species of marine placenticeratid ammonite. The Hildoceras genus of ammonite is named in honour of St Hilda of Whitby. The chambered part of the ammonite shell is called a phragmocone. During a siege of the Ammonite capital of Rabbah, David remains in Jerusalem. Several words derive from Amun via the Greek form, "Ammon", such as "ammonia" and "ammonite". The top of the stage is at the first appearance of ammonite genus "Leioceras". Irbid witnessed the Edomite and Ammonite civilizations. This is just a little below the first appearance of the ammonite species "Thurmanniceras pertransiens".