1865–1870
William Hart, 1860
William Hart, 1865
William Hart, 1823
William Hart, 1855
William Hart, 1877
William Hart, 1854
![[Fossil of a starfish]](https://media.getty.edu/iiif/image/591d5f29-4902-4f2f-be23-77535be001e1/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/3a634241-acc8-44cd-974c-9f15a18f682b/full/843,/0/default.jpg)
![[Fossil of a crinoid]](https://media.getty.edu/iiif/image/c8f864aa-ab58-4bec-864d-aaeaae2831b6/full/843,/0/default.jpg)