Fig.1 in A spinose appendage fragment of a problematic arthropod from the Early Ordovician of Morocco

Fig.1. Several types of spinose arthropod appendages discussed in the text. A. Spiculate first appendage of the anomalocaridid Anomalocaris briggsi, Early Cambrian, Australia (redrawn from Nedin 1995). B. Pectinate first appendage of the anomalocaridid Laggania cambria, Middle Cambrian, Canada (redrawn from Dzik and Lendzion 1988). C. Third prosomal appendage of the megalograptid eurypterid Megalograptus ohioensis, Late Ordovician, USA (reproduced from Caster and Kjellesvig−Waering 1964). D. Third prosomal appendage of the mixopterid eurypterid Mixopterus kiaeri, Early Devonian, Norway (redrawn from Størmer 1934). E. Third prosomal appendage of the laurieipterid eurypterid Ctenopterus cestrotus, Late Silurian, USA (redrawn from Clarke and Ruedemann 1912). F. Chelicera of the pterygotid eurypterid Erettopterus osiliensis, Late Silurian, Estonia and USA (observations of O.E.T.). G. Angustidontus weihmannae, Late Devonian, Canada (drawing based on photograph in Copeland and Bolton 1960). H. Cheliped of the decapod malacostracan Thaumastocheles zaleucus, Recent, Caribbean region (redrawn from Tshudy and Sorhannus 2000). Scale bars 10 mm.