21471 - NWA Unclassified Chondrite Meteorite H Type 26.2g Polished Section Megistaspidella triangularis UNM) The etched surface of

UNM) The etched surface of this pallasite shows approximately 98% of the metal consisting of very fine-grained (<1 μm) plessite

Van Roy et al

filter-feeding appendage of Aegirocassis is considerably more complex and sophisticated than that of Tamisiocaris and may herald a shift in the Early Ordovician to large-scale filter feeding in the oceans

Eurypholis

It is the gravel - sandy sediment still strongly adhered and cemented to its surface

21471 - NWA Unclassified Chondrite Meteorite H Type 26.2g Polished Section Megistaspidella triangularis UNM) The etched surface ofThe authenticity of this specimen is guaranteed by the geologist Juan Avils Poblador, member of International Meteorite Collectors Association (IMCA 5681).