Trilobites from New Mexico

 

Caballero Formation, lower Mississippian, southern New Mexico:

 

Trilobites:

 

Ameropiltonia perplexa Brezinski, 2000

Brachymetopus indianwellensis Brezinski, 2000

Comptonaspis swallowi (Shumard, 1855)

Dixiphopyge armata (Vogdes, 1891)

Griffithidella caballeroensis Brezinski, 2000

Kollarcephalus granati Brezinski, 2000

Namuropyge sp. A (in Brezinski, 2000)

Gen. and sp. indet. (in Brezinski, 2000)

 

 

Lake Valley Formation (Dona Ana, Arcente, Tierra Blanca, Nunn, Alamogordo, and Andrecito Members), lower Mississippian, southern New Mexico:

 

Trilobites:

 

Australosutura llanoensis Brezinski, 1998

Australosutura sp. (in Brezinski, 2000)

Breviphillipsia semeretis Hessler, 1963

Griffithidella caballeroensis Brezinski, 2000

Griffithidella doris (Hall, 1860)

Hesslerides arcentensis Brezinski, 2000

Namuropyge newmexicoensis Brezinski, 2000

Namuropyge sp. B (in Brezinski, 2000)

Nunnaspis stitti Brezinski, 2000

Phillibole planucauda (Brezinski, 1998)

Piltonia carlakertisae Brezinski, 2000

Proetides sp. (in Brezinski, 2000)

Pudoproetus fernglenensis (Weller, 1909)

Thigriffides(?) alamogordoensis Brezinski, 2000

Thigriffides triangulatus Brezinski, 2000

Thigriffides sp. (in Brezinski, 2000)

 

 

Brezinski (2000) divided the lower Mississipian strata of New Mexico (Caballero and Lake Valley Formations) into 3 trilobite faunas:

 

Comptonaspis swallowi fauna (lowest, in the Caballero Fm.):

 

Ameropiltonia perplexa Brezinski, 2000

Brachymetopus indianwellensis Brezinski, 2000

Comptonaspis swallowi (Shumard, 1855)

Dixiphopyge armata (Vogdes, 1891)

Griffithidella caballeroensis Brezinski, 2000

Kollarcephalus granati Brezinski, 2000

 

Breviphillipsia semeretis fauna (Andrecito, Alamogordo, Nunn, and Tierra Blanca Members of the Lake Valley Fm.):

 

Australosutura llanoensis Brezinski, 1998

Breviphillipsia semeretis Hessler, 1963

Griffithidella doris (Hall, 1860)

Namuropyge newmexicoensis Brezinski, 2000

Nunnaspis stitti Brezinski, 2000

Phillibole planucauda (Brezinski, 1998)

Piltonia carlakertisae Brezinski, 2000

Pudoproetus fernglenensis (Weller, 1909)

Thigriffides(?) alamogordoensis Brezinski, 2000

 

Hesslerides arcentensis fauna (lower Dona Ona, Arcente, and upper Tierra Blanca Members of the Lake Valley Fm.):

 

Australosutura sp. (in Brezinski, 2000)

Pudoproetus fernglenensis (Weller, 1909)

Thigriffides triangulatus Brezinski, 2000

 

 

REFERENCES:

 

Armstrong, A. K. (1958)  The Mississippian of west-central New Mexico. New Mexico Institute of Mining and Technology Memoir 5, 32 pp.

 

Brezinski, D. K. (2000)  Lower Mississippian trilobites from southern New Mexico, Journal of Paleontology, Vol. 74, No. 6, pp. 1043-1066

 

Brezinski, D. K. (1999)  The rise and fall of late Paleozoic trilobites of the United States, Journal of Paleontology, Vol. 73, No. 2, pp. 164-175

 

 

OTHER trilobite-bearing formations in New Mexico:

We do not as yet have much information on these formations.

 

 

Kelly Formation, Ladron Mountains, western New Mexico

 

Phillipsia sp. (probably conspecific with Hesslerides arcentensis Brezinski, 2000)

 

References:

 

Armstrong, A. K. (1958)  The Mississippian of west-central New Mexico. New Mexico Institute of Mining and Technology Memoir 5, 32 pp.

 

Brezinski, D. K. (2000)  Lower Mississippian trilobites from southern New Mexico, Journal of Paleontology, Vol. 74, No. 6, pp. 1043-1066

 

Brezinski, D. K. (1999)  The rise and fall of late Paleozoic trilobites of the United States, Journal of Paleontology, Vol. 73, No. 2, pp. 164-175

 

--------------------------------------------------------------------------------------------------------------

 

San Andreas Formation, Permian, New Mexico

 

References:

 

Brezinski, D. K. (2000)  Lower Mississippian trilobites from southern New Mexico, Journal of Paleontology, Vol. 74, No. 6, pp. 1043-1066

 

Brezinski, D. K. (1999)  The rise and fall of late Paleozoic trilobites of the United States, Journal of Paleontology, Vol. 73, No. 2, pp. 164-175

 


Western Trilobites Association Home:
Trilobite Genera / Species I Trilobite Formations I Trilobite Locations