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Upper Cambrian
Weeks Formation
(approx. 500 million years ago)

HOUSE RANGE
MILLARD CO., UTAH




  Cedaria minor
   Courtesy: QJS
   Size: 0.8" (2.0 cm)
   Remarks:  
 
 
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  Weeksina unispina
   Courtesy: QJS
   Size: 0.39" (1.0 cm)
   Remarks:  
 
 
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  Democephalus granulatus
   Courtesy: QJS
   Size: 1.32" (3.35 cm)
   Remarks:  
 
 
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  Coosella sp.
   Courtesy:
   Size: 1.25" 
   Remarks:  
 
 
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  Dresbachia sp.
   Courtesy: BLM/UofU 
   Size: 0.83" (2.1 cm)
   Remarks:  "smoked"
 
 
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  Densonella semele
   Courtesy: QJS
   Size: little 
   Remarks:  
 
 
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  Cephalic appendage
   Courtesy: BLM/UofU 
   Size: 1.1"  (2.7 cm)
   Remarks:  Anomalocaris????
 
 
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  Indeterminate Arthropod
   Courtesy: BLM/UofU
   Size: 1" (2.5 cm) 
   Remarks:  with antennae 
 
 
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  Beckwithia typa
   Courtesy: BLM/UofU
   Size: 1.6" (4.2 cm)
   Remarks: specimen is a counterpart, but photo inverted- shows positive relief
 
 
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  Selenocorphye platura
   Courtesy: BLM/UofU
   Size:  0.62" (1.8 cm)
   Remarks:  Collected and prepared by Hector Hinojosa  
 
 
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  Xiphosuria
   Courtesy: BLM/UofU
   Size: 3.1" (7.8 cm)
   Remarks: horseshoe crab relative
 
 
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  Selenocorphye platura
   Courtesy: BLM/UofU
   Size: 1.1" (2.8 cm)
   Remarks: horseshoe crab relative
 
 
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  Norwoodia bellaspina
   Courtesy:
   Size: 0.5" (1.3 cm)
   Remarks:  
 
 
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  Tricrepacephalus coria
   Courtesy:  BLM/UofU
   Size: 1.75" (4.4 cm) 
   Remarks: Bite trace?
 
 
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  Coosella sp.
   Courtesy: BLM/UofU
   Size: 1.5" 
   Remarks:   
 
 
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  Democephalus granulatus
   Courtesy: UofU/QJS
   Size: 1.32"
   Remarks:  
 
 
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  Cedaria minor
   Courtesy: QJS 
   Size: 
   Remarks:  
 
 
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  Meteoraspis
   Courtesy:UofU/QJS  
   Size:1.1"  
   Remarks:  
 
 
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  Weeksina unispina
   Courtesy:  
   Size: 0.5" 
   Remarks:  
 
 
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  Dresbachia
   Courtesy: BLM/UofU  
   Size: 0.75" 
   Remarks:  
 
 
ZOOM | TAXONOMY

  Modocia hewlisca
   Courtesy: Iris & Robert Harris
   Size: 1.1" (2.8cm)
   Remarks:  
 
 
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  Tricrepacephalus coria
   Courtesy:  
   Size:  
   Remarks:  
 
 
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Last Updated: 4/6/20