1865–1870
William Hart, 1823
William Hart, 1865
William Hart, 1860
William Hart, 1855
William Hart, 1854
William Hart, 1877
![[Fossil of a crinoid]](https://media.getty.edu/iiif/image/b1f2227e-4685-418e-ac2a-9dd46e8e8767/full/843,/0/default.jpg)
![[Fossil of a crinoid]](https://media.getty.edu/iiif/image/3a634241-acc8-44cd-974c-9f15a18f682b/full/843,/0/default.jpg)
![[Fossil of a crinoid]](https://media.getty.edu/iiif/image/8e48930f-5d5d-48cc-8db4-a218a273bc0d/full/843,/0/default.jpg)
![[Fossil of a crinoid]](https://media.getty.edu/iiif/image/6a485ed6-7668-4e50-9a27-d2922b515182/full/843,/0/default.jpg)
![[Fossil of a crinoid]](https://media.getty.edu/iiif/image/bd813d6f-722d-4906-a51d-cc490d02c4e2/full/843,/0/default.jpg)