![](https://assets.catawiki.com/image/cw_lot_card/plain/assets/catawiki/assets/2024/4/15/c/5/e/c5ee5485-cb4d-4a62-b50e-0c1ad6dae128.jpg)
Brittle Star - Απολιθωμένη μήτρα - ophiuria - 58 cm - 47 cm
Αρ. 85551513
Αρ. 85551513
This alien-looking fossil is a nice plate of very detailed Eocrinoids of the genus Ascocystites collected near Kaid Errami, Morocco.
Eocrinoids are one of the earliest-known groups of echinoderms.
This plate present 55 specimens, 32 on front side and 25 on back side.
The bright yellow- orange coloration due the oxidization of iron pyrite is very beautiful and showy, set off the pink color of the matrix quite well.
Larger specimen is 9cm.
An interesting aspect: ALL the specimens are oriented in the same direction, indicating a sea stream at the time of death.
Enhancements note:
this specimen come from very rich iron hydroxide Fe(OH)2 layers which is brown yellow color.
As tentacles and the stalk fossilized almost 3d the hydroxid Fe(OH)2 hydrate and so become ferric oxyhydroxide which is mostly black color.
What we do is to visually highlight the different between the hydroxid Fe(OH)2 and the ferric oxyhydroxide ( body and tentacle and stalk) using Reviver for stones and some oxide.
So the enhancements job is about 15-20% on the real aspect when the fossil is found.
Plate is 24 x 18 x 1 cm.
It can be displayed in two different ways.
Stunning piece of ancient "life", 450 milions years old.
Plastic standing included.
Πώς να πραγματοποιήσετε αγορές στην Catawiki
1. Ανακαλύψτε κάτι ιδιαίτερο
2. Υποβάλετε την κορυφαία προσφορά
3. Πληρώστε με ασφάλεια