The Echinoid Directory

Glossary

Click on a letter, or enter the start of a word into the search box

A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

Glossary terms beginning with: V

verticillate (spine): Spine shaft ornamentation comprising a succession of rings of outwardly projecting microscopic thorns. SEM of part of a spine shaft is illustrated