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making them essential indicators of early marine ecosystems
Thorax (middle): 2–61 articulated segments providing mobility
The presence of a preserved branchial apparatus suggests neotenic retention of external gills into adulthood
making it extremely popular among collectors and mineral enthusiasts
2.7" Metacanthina Issoumourensis Trilobite Fossil Devonian Age 400 Mil Yrs Old COA Mammoth making them essential indicators ofLocation: Lghaft, Morocco Weight: 7. 3 Ounces Dimensions: 3. 4 Inches Long, 2. 3 Inches Wide, 1. 9 Inches Thick (Matrix) The trilobite is: 2. 7 Inches Long, 1. 8 Inches Wide, 0. 6 Inches thick Comes with a Certificate of Authenticity. The item pictured is the one you will receive. Metacanthina Issoumourensis Trilobites are a fossil group of extinct marine arthropods that form the class Trilobita. Trilobites form one of the earliest known groups of