Crinoid+
Size: 12 cm crown for the Haeretocrinus
1. Haeretocrinus wagneri is a large and spectacular crinoid, dwarfing the rest of the Pontiac crinoid fauna. This species exhibits gracefully long, rounded, bi-endotomously branching arms that are constructed as to never be apposed to each other, as well as a recurved nodose anal sac (though relatively small and typically obscured by the arms). It also maintains the "primitive" cladid crinoid arrangement of three anal plates in the cup and uniserial pinnulate arms. |
---|
Copyright © 2024 by Samuel Kim, all rights reserved