| IGSN | Sample Type | Notes | Location | Number Thin Sections | Storage Location |
|---|---|---|---|---|---|
| GRD03XNS0 | Protobranchia | 4 articulated | Iowa | 0 | Ritter 154, 1 A |
| GRD03XOS0 | Ostreida | 3 specimens, Grayson Formation | Texas | 0 | Ritter 154, 1 A |
| GRD03XPS0 | Mytilida | New York | 0 | Ritter 154, 1 A | |
| GRD03XQS0 | Mollusca | bivalves and gastropods | California | 0 | Ritter 154, 1 A |
| GRD03XRS0 | Mytilida | 3 valves; Etchegoin Formation | California | 0 | Ritter 154, 1 A |
| GRD03XSS0 | Arcida | 7 valves; Purisima Formation | California | 0 | Ritter 154, 1 A |
| GRD03XTS0 | Fossil | 0 | |||
| GRD03XUS0 | Fossil | 0 | |||
| GRD03XVS0 | Fossil | 0 | |||
| GRD03XWS0 | Fossil | 0 | |||
| GRD03XXS0 | Fossil | 0 | |||
| GRD03XYS0 | Fossil | 0 | |||
| GRD03XZS0 | Fossil | 0 | |||
| GRD03Y0S0 | Fossil | 0 | |||
| GRD03Y1S0 | Fossil | 0 | |||
| GRD03Y2S0 | Fossil | 0 | |||
| GRD03Y3S0 | Fossil | 0 | |||
| GRD03Y4S0 | Fossil | 0 | |||
| GRD03Y5S0 | Fossil | 0 | |||
| GRD03Y6S0 | Fossil | 0 | |||
| GRD03Y7S0 | Fossil | 0 | |||
| GRD03Y8S0 | Fossil | 0 | |||
| GRD03Y9S0 | Fossil | 0 | |||
| GRD03YAS0 | Fossil | 0 | |||
| GRD03YBS0 | Fossil | 0 | |||
| GRD03YCS0 | Fossil | 0 | |||
| GRD03YDS0 | Fossil | 0 | |||
| GRD03YES0 | Fossil | 0 | |||
| GRD03YFS0 | Fossil | 0 | |||
| GRD03YGS0 | Fossil | 0 |