_Dillon_and_Dillon_NMNH_JAC.jpg)  
Plagiohammus brunneus  Dillon & Dillon Specimen Type: holotype Institution: NMNH United States National Museum, Washington, DC, USA Photographer: John Chemsak 18195 
 
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_Dillon_and_Dillon_Mexico_USNM_SWL.jpg)  
Plagiohammus brunneus  Dillon & Dillon Specimen Type: holotype Institution: NMNH United States National Museum, Washington, DC, USA Photographer: Steve Lingafelter Collection Location: Mexico 20633 
 
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