ammonites
Heteralosia hystricula Girty 1908

Strophomenata - Productida - Strophalosiidae

Alternative combination: Strophalosia hystricula

Full reference: G. H. Girty. 1908. The Guadalupian fauna. United States Geological Survey Professional Paper 58:1-651

Belongs to Heteralosia according to G. A. Cooper and R. E. Grant 1975

Sister taxa: Heteralosia alexandrae, Heteralosia complectens, Heteralosia haerens, Heteralosia iphia, Heteralosia magnispina, Heteralosia mexicana, Heteralosia paucispinosa, Heteralosia tenuispina, Heteralosia vidriensis, Strophalosia (Heteralosia) sublamellata, Strophalosia (Heteralosia) tenuispina

Type specimen: Its type locality is USGS 3763 green, Comanche Canyon, Glass Mountains, which is in a Roadian carbonate limestone in the Word Formation of Texas

Average measurements (in mm): shell 10.4 x 12.2, valve 8.00 x 11.00