Priapulans
Priapulans are a phylum of worm-like animals that live on the seafloor and commonly burrow into the sediment, feeding on worms. They periodically shed a thin cuticle in order to grow, a feature that unites them with arthropods. Some species grow and live in tubes.
Only 16 living and 14 fossil species of priapulans are known (Brusca and Brusca, 2003); some of these fossils species are known from the Middle Cambrian of Utah and include the following species:
Gallery of Priapulans
Note: Marks on all scale bars are centimeters (cm).
Ottoia prolifica Walcott, 1911c
KUMIP 144857. Spence Shale Member of the Langston Formation, Wellsville Mountains, Box Elder County, Utah. Figures 3.1, 3.2 in Conway Morris & Robison, 1986.
KUMIP 204770 (Part, counterpart). Marjum Formation, House Range, Millard County, Utah. Figures 1.1, 1.2, 1.3, 1.4, 2 in Conway Morris & Robison, 1986.
KUMIP 314105 (Part). Marjum Formation, House Range, Millard County, Utah.
Selkirkia willoughbyi Conway Morris & Robison, 1986
KUMIP 204788 (Holotype; Part, counterpart). Marjum Formation, House Range, Millard County, Utah. Figures 4.2, 4.3 in Conway Morris & Robison, 1986.
KUMIP 144873 (Paratype). Wheeler Formation, Drum Mountains, Millard County, Utah. Figure 4.4 in Conway Morris & Robison, 1986.
KUMIP 144872 (Paratype). Wheeler Formation, Drum Mountains, Millard County, Utah. Figure 4.7 in Conway Morris & Robison, 1986.
KUMIP 144871 (Paratype). Wheeler Formation, Drum Mountains, Millard County, Utah. Figure 4.6 in Conway Morris & Robison, 1986.
KUMIP 144867 (Paratype). Wheeler Formation, Drum Mountains, Millard County, Utah. Figure 4.5 in Conway Morris & Robison, 1986.
KUMIP 144859 to 144861 (Paratypes). Wheeler Formation, Drum Mountains, Millard County, Utah. Figure No in Conway Morris & Robison, 1986.
KUMIP 144846 to 144850 (Paratypes; part). Wheeler Formation, Drum Mountains, Millard County, Utah. Figure 4.1 in Conway Morris & Robison, 1986.
KUMIP 144854 &144855 (Paratypes). Wheeler Formation, Drum Mountains, Millard County, Utah. Figure 4.8, 4.9 in Conway Morris & Robison, 1986.
Selkirkia cf. columbia Conway Morris, 1977
KUMIP 204363 & 204364. Spence Shale Member of the Langston Formation, Wellsville Mountains, Box Elder County, Utah. Figure 17 in Conway Morris & Robison, 1988.
KUMIP 204365. Spence Shale Member of the Langston Formation, Wellsville Mountains, Box Elder County, Utah.
Selkirkia spencei Resser, 1939
KUMIP 144845. Spence Shale Member of the Langston Formation, Wellsville Mountains, Box Elder County, Utah. Figure 7.3 in Conway Morris & Robison, 1986.
KUMIP 144858. Spence Shale Member of the Langston Formation, Wellsville Mountains, Box Elder County, Utah. Figure 7.4 in Conway Morris & Robison, 1986.
Selkirkia sp. Walcott, 1911c
KUMIP 144844. Wheeler Formation, House Range, Millard County, Utah. Figure 7.1 in Conway Morris & Robison, 1986.
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