| Here is inexpensive Valongo Trilobite of the species Neseuretus tristani. This fossil is a nice example for a late diagenitical deformation. | |||
Location: | Valongo - Portugal | ||
| Size trilobite: | about 69 mm long, | ||
| Age: | Middle Ordovician , Llandailo (Darriwilian) (about. 464. Ma) | ||