Cryptoblastus

{{Short description|Extinct genus of marine invertebrates}}

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{{Automatic Taxobox

| name = Cryptoblastus

| fossil_range = {{fossilrange|360|320|Mississippian}}

| taxon = Cryptoblastus

| authority = Etherridge, Jr. & Carpender, 1886

}}

Cryptoblastus is a genus of extinct blastoids, a primitive group of echinoderms related to the modern sea lilies.{{cite web | last = | first = | title = Blastoid Association Plate from Burlington Formation | work = The Virtual Fossil Museum: Fossils Across Geological Time and Evolution | publisher = | date = | url = http://www.fossilmuseum.net/Fossil-Pictures/Blastoids/Crinoid13/blastoids.htm | doi = | accessdate = June 27, 2009}}

Fossils are found in sedimentary rocks laid down in the Early Carboniferous period some 360 to 320 million years ago.

Cryptoblastus. (2011). In Encyclopædia Britannica. Retrieved from http://www.britannica.com/EBchecked/topic/145001/Cryptoblastus