Careful conservation of this genuine and authentic fossil limestone plate has enabled the now natural sculptural element to be highlighted. Exhibiting a fully articulated crinoid crown and stem. The aboral cup or crown, attached to its associated stem or stalk. The stems of some crinoids may have been as much as 50 feet in length on large type Crinoidea.
The proximal stem end is attached to the aboral crown cup, the calyx. In the crown or head the arms covered in cilia (feet like feelers), pass food to the mouth situated at the top of the calyx, in this crown the anus is situated next to the mouth, an intestinal tube passes from the mouth in a'U' shaped tract to the annulus, the crinoids food passes through this tract and is digested and exits via the anus opening when the cover over the aboral cup opens to feed. Origin: Djebel Issoumour, Alnif, Morocco, North Africa.
Age: Palaeozoic, Devonian, 443.500,000 - 358,900,000 years. Height: 28.0 cm (diagonal measure).
Width: 19.0 cm (widest extremity). Depth: 4.0 cm (thickest part crinoid crown). Overall weight: 2.126 Kg.
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AB36-38, AB54-56, FK17 - FK21, HS1 - HS9, IM1 - IM99, IV1 - IV63, KA27 - KA28, KW1 - KW17, PA20 - PA88, PH17 - PH505, TR21 - TR25, ZE1 - ZE3, BT, GY, JE. The item "Fossil Crinoid Plate 400 Million years old, 280 mm" is in sale since Tuesday, June 30, 2020. This item is in the category "Collectables\Rocks, Fossils & Minerals\Fossils\Echinoids & Sea Urchins". The seller is "richardthefossil" and is located in Heswall. This item can be shipped to North, South, or Latin America, all countries in Europe, all countries in continental Asia, Australia.