"Interior of Brachiopod shell, showing calcareous support for the 'arms'" -Thomson, 1916

Brachiopod

"Interior of Brachiopod shell, showing calcareous support for the 'arms'" -Thomson, 1916

The shell of the brachiopod, Lingula Lewisii.

Brachiopod

The shell of the brachiopod, Lingula Lewisii.