- ywang083 Museum
- 4F The Weeks Formation Konservat-Lagerstätte
- Lonchocephalus plena (Walcott 1916)
Lonchocephalus plena (Walcott 1916)
Lonchocephalus plena is an extremely rare and diminutive ptychopariid trilobite collected from the Weeks Formation in the House Range, Millard County, Utah
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