Blastoids (class Blastoidea) are an extinct type of stemmed echinoderm, often referred to as sea buds. ... Although never as diverse as their contemporary relatives, the crinoids, blastoids are common fossils, especially in many Mississippian-age rocks.

What is blastoid variant?

The blastoid variant of MCL is a rare type of Non-Hodgkin lymphoma which carries an overall poor prognosis.

What is blastoid fossil?

Blastoids are beautiful fossils that look much like small hickory nuts. They most commonly are found in the river cliffs and stream banks of western and southwestern Illinois, especially in Randolph County, and in southern Illinois near the Ohio River. ‹ Common Types of Illinois Fossils up Bryozoans ›