Cryptoblastus
Cryptoblastus | |
---|---|
Scientific classification | |
Kingdom: | Animalia |
Phylum: | Echinodermata |
Subphylum: | †Blastozoa |
Class: | † Blastoidea |
Order: | †Spiraculata |
Genus: | †Cryptoblastus Etherridge, Jr. & Carpender, 1886 |
Cryptoblastus is a genus of extinct blastoids, a primitive group of echinoderms related to the modern sea lilies.[1] Fossils are found in sedimentary rocks laid down in the Early Carboniferous period some 360 to 320 million years ago. [2]
References
- ↑ "Blastoid Association Plate from Burlington Formation". The Virtual Fossil Museum: Fossils Across Geological Time and Evolution. Retrieved June 27, 2009.
- ↑ Cryptoblastus. (2011). In Encyclopædia Britannica. Retrieved from http://www.britannica.com/EBchecked/topic/145001/Cryptoblastus
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