| Cryptoblastus Temporal range: Mississippian |
|
|---|---|
| Scientific classification | |
| Kingdom: | Animalia |
| Phylum: | Echinodermata |
| Subphylum: | Crinozoa |
| Class: | Crinoidea |
| Genus: | Cryptoblastus (extinct) |
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 era some 360 to 320 million years ago. [2]