Family
Spinagnostidae Howell, 1935
| Images | ||||||
|---|---|---|---|---|---|---|
| ELM G439:1590 | Hypagnostus parvifrons | Hypagnostus parvifrons (Linnarson) | USAHouse range,Utah | Middle Cambrian (old nomenclature) | marjum |
| Images | ||||||
|---|---|---|---|---|---|---|
| ELM G439:1590 | Hypagnostus parvifrons | Hypagnostus parvifrons (Linnarson) | USAHouse range,Utah | Middle Cambrian (old nomenclature) | marjum |