Dionide Trilobite from Valongo Portugal
Order Phacopida, Family Calymenidae
trilobite is 2” in width on an 8 1/4 x 5” plate
Valongo Formation, Covelo, Portugal
This specimen exhibits all the hallmark attributes of the best-preserved
Valongo trilobites. One is struck immediately by the exquisite
preservation, color and aesthetics of this specimen. It is fully
prone and inflated, resting comfortably on the matrix.
trilobites are easily recognized by their ghostly appearance.
They have been collected since the 19th century. They are normally
compressed, distorted, and the matrix has a slatey appearance.
is a monotonous
silty mudrocks transformed into dark slate by low regional metamorphism.
fossil pictures to enlarge