UP FOR BID HERE IS A COLLECTION OF 10 DELTABLASTUS PERMICUS. Excellent quality in VARYING CONDITION. SOME HIGHLY DETAILED , SOME WITH BROKEN BITS , NONE REPAIRED. A LITTLE WATER BRINGS OUT THE DEFINITION IN THE AMBULACRA. 1-1.5cm dia.
Blastoids were one of the last remaning genera of an extinct class of Echinodem. The Blastoid vanished in the Permian and these examples were one of the last remaning on the planet 300myo appx.
Name: Deltablastus permicus
Geologic Age: Permian
Stratigraphic Detail: Sonnebait Formation, Basleo Faultline
Location: Timor, Indonesia
Blastoids were one of the first sea animals to anchor themselves to the sea bed by means of a stem and root. Deltablastus had an unusually thin stem. The top was a five sided calyx which resembled a nut. It had fine hairlike arms called brachioles that it used to gather its algae like food as it passed across in the currents. It is this 'flower like' section that has been preserved.
Here's the scientific taxonomic identification:
The Permian of Timor in the Lesser Sunda Islands has attracted the attention of palaeontologists since the middle of the nineteenth century because of the richness, diversity and excellent state of preservation of its fauna. The Permian rocks of Timor were deposited on the northern margin of Australia. The region of Timor was involved in a continent–arc collision, where Australia collided with the Banda Arcs. As a result of this collision, Permian rocks of the Australian margin have been disrupted by folding and faulting with generations of mud-matrix mélange, and uplifted to form part of the island of Timor. This has an elevation of about 4,000 feet where they were found.
Timor is described as an “uplifted, faulted margin of the former Australian craton, composed of Permian to Cretaceous aged rocks. Miocene and lower rocks form a thin layer in some areas”
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