Museum-Quality Selkirkia willoughbyi from Cambrian Utah

Selkirkia willoughbyi

Phylum Priapulida

Geological Time: Upper Middle Cambrian

Size (25.4 mm = 1 inch): Selkirkia: 20 mm long on a 53 mm by 55 mm matrix

Fossil Site: Marjum Formation, House Range, Millard County, Utah

Fossil Code: CB040

Price: $145.00 - sold

Selkirkia willoughbyi from Cambrian UtahDescription: This specimen shows a priapulid of the genus Selkirkia which is undoubtedly the best-preserved I have come across in some time. Notice evidence of the everted proboscis. The priapulids are a group of Priapulid Wormnon-segmented worms whose modern-day examples can reach 30 cm in length, and live in both shallow and deep marine sands as carnivores. The terminal mouth bears cone-shaped projections called scalids by which the worm would snare its prey. Their tube presumably was held nearly vertically in the substrate with just the tip protruding into the water column.

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