Silurian
| Acquisition # | Common Name |
Species Name |
Image | Period | Location |
|---|---|---|---|---|---|
|
531 |
Recepticulite |
 |
Iowa (?) | ||
|
3020 |
Recepticulite |
 |
Colorado (?) | ||
|
90 |
Crinoid stems (partially dissolved) |
 |
Grand Mound, Iowa | ||
|
3025 |
Stromatoporidea |
 |
unknown | ||
|
104 |
Sea Star, Brittlestar, Sea-lily (plate) |
 |
Kinglake, Victoria, Australia | ||
|
105 |
Cephalopod (Nautilus) (internal mold) |
 |
Grand Mound, Iowa | ||
|
110 |
Colonial Coral |
 |
Grand Mound, Iowa | ||
|
111 |
Rugose Horn Coral (outer shell removed) |
 |
Grand Mound, Iowa | ||
|
223 |
Stromatoporidea |
 |
|||
|
118 |
Sponge (note star-shaped spicules) | Astraeospongia meniscus |
 |
Brownsport Formation, Perryville, Tennessee | |
|
3023 |
Sponge | Astrospongia |
 |
Indiana | |
|
4102 |
Thaloid | Bryophyte grade land plant |
 |
Massanutten Sandstone, Virginia | |
|
3021 |
Trilobite (rolled) | Calymene |
 |
Indiana | |
|
91 b |
Cystoid (crinoid stems and sea lily fragments are also present) | Caryocrinus sp. |
 |
||
|
100 |
Cystoid | Caryocrinus sp. |
 |
Gower Formation, Grand Mound, Iowa | |
|
3022 |
Sponge | Caryospongia |
 |
Indiana | |
|
74 |
Trilobite (enrolled) | Cyphaspis christyi |
 |
Waldron Shale, Waldron, Indiana | |
|
75 (front view) |
Trilobite | Diacalymene clavicula |
 |
Ada, Oklahoma | |
|
75 (rear view) |
Trilobite | Diacalymene clavicula |
 |
Ada, Oklahoma | |
|
81 |
Brachiopod (internal mold) | Eospirifer sp. |
 |
Iowa | |
|
91 |
Sea Lily (with attached snail) | Eucalyptocrinites crassus |
 |
Waldron Shale, Waldron, Indiana | |
|
79 |
Sea Scorpian | Euryterus remipes |
 |
New York | |
|
672 |
Cystoid | Holocystites scutellatus |
 |
Osgood Formation, Ripley County, Indiana | |
|
101 |
Cystoid | Holocystites scutellatus |
 |
||
|
82 a |
Brachiopods (3pcs) (internal molds) | Pentamerus sp. |
 |
Grand Mound, Iowa | |
|
3024 |
Gastropod (with brachiopods and crinoid stems) | Platyceras |
 |
Indiana | |
|
53 c |
Receptaculid | Receptaculites |
 |
Iowa (?) | |
|
1517 |
Tabulate Pipe Coral | Syringopora |
 |
unknown | |
|
107 |
Gastropod | Tropidodiscus sp. |
 |
Grand Mound, Iowa | |
|
96 |
Sea Lily | Unidentified |
 |
Waldron Shale, Waldron, Indiana |
