70 U.S. NATIONAL MUSEUM BULLETIN 262 



Foor die eras — Continued 



shumardianum praecursor Girty (misspelled Foordoc eras) 



Girty, G. H., 1908: p. 498, pi. 25, figs. 15, 15a,b. 

 Holotype 118622 



Basal black Is. (Delaware Mountain Fm.) Texas 



Fremontoceras 



loperi Foerste 



Foerste, A. F., 1935: p. 89, 90, pi. 29, figs. 1-4. 

 Holotype 90953 



Fremont Fm. Colorado 



Gasconoceras 



obesum Foerste 



Foerste, A. F., 1936a: p. 63-66, pi. 25, fig. 4. 



Paratypes 92801, 92801a, b 



Gascons Fm. Quebec, Canada 



planiventrum Foerste 



Foerste, A. F., 1936a: p. 62, 63, pi. 25, fig. 3. 



Holotype 92800 



Gascons Fm. Quebec, Canada 



Gas pocyrtoc eras 



cooperi Foerste 



Foerste, A. F., 1936a: p. 56, 57, pi. 24, fig. 10; pi. 25, figs. 1, 2. 



Holotype 92798 



West Point Ls. Quebec, Canada 



telleri Foerste 



Foerste, A. F., 1936a: p. 57, 58, pi. 24, figs. 7-9. 

 Holotype and paratype 92799, 92799a 



Racine Mbr. Wisconsin 



Geisonoceras 



rochesterense Foerste 



Foerste, A. F., 1928c: p. 254, pi. 53, fig. 1. 



Syntype 10401 



Rochester Sh. New York 



Syntype 18277 



Lockport ? New York 



Geisonocerina 



landerensis Foerste 



Foerste, A. F., 1935: p. 22, 23, pi. 2, figs. 6, 7; pi. 11, fig. 4. 

 Holotype and paratypes 90902a- c 



Big Horn Fm., Lander Ss. Mbr. Wyoming 



