Metacanthina issoumourensis Trilobite | Lghaft, Morocco
SPECIES: Metacanthina issoumourensis
AGE: Lower Devonian (Pragian Stage)
LOCATION: Lghaft, Morocco
FORMATION: Lhandar Formation
Matrix size: 4" x 3" x 2"
Specimen size: curved 1.5"
Weight: 1lb 6.5oz / 23 oz
Trilobites, exclusively marine animals, first appeared at the beginning of the Cambrian Period, about 542 million years ago, when they dominated the seas. Although they became less abundant in succeeding geologic periods, a few forms persisted into the Permian Period, which ended about 251 million years ago.