Eucladocrinus kentuckiensis Crinoid Stem

Here is another picture of what was posted yesterday but from a different angle.

Eucladocrinus kentuckiensis

Here is a stem that I am trying to figure out what or how the cut lines were made on it.

Embedded Platycrinites Calyx

Here is the bottom of an embedded Platycrinites calyx in this rock plate. The plate also has a lot of stem pieces.