[x]
Here is a plate from the Silurian of eastern Canada that presents three different species of trilobites (Rielaspis, Nucleurus, and Encrinurus) along with over 100 crinoid stems and calyxes.
American Museum of Natural History
[x]
Here is a plate from the Silurian of eastern Canada that presents three different species of trilobites (Rielaspis, Nucleurus, and Encrinurus) along with over 100 crinoid stems and calyxes.