Blancan Carnivore Trigonictis 
35 
Coastal Plain. U. S. Geol. Surv. Bull. 1482-D. iv + 61 pp. 
Webb, S. David. 1974. Chronology of Florida Pleistocene mammals, pp. 5-31 in 
Webb, S. David (ed.). Pleistocene mammals of Florida. Univ. Presses Fla., 
Gainesville, x + 270 pp. 
. 1976. Mammalian faunal dynamics of the great American interchange. 
Paleobiology 2(3):220-234. 
Woodburne, Michael O. 1969. Systematics, biogeography, and evolution of 
Cynorca and Dyseohyus (Tayassuidae). Bull. Am. Mus. Nat. Hist. 141(2): 
271-356. 
Wortman, Jacob L. 1883. [Remarks on Galera macrodon.] Am. Nat. 77(9): 1001. 
Zakrzewski, Richard J. 1967. The systematic position of Canimartesl from the 
upper Pliocene of Idaho. J. Mammal. 45(2):293-297. 
Accepted 18 March 1981 
ADDENDUM 
After this paper was submitted for publication, Richard H. Tedford 
and Henry Galiano of the American Museum of Natural History very 
kindly called to our attention the following unreported specimens of 
Trigonictis: 
F:AM 63107, partial left maxilla with P-, P-, and M- 
lacking labial part of crown. We assign the specimen to T. 
macrodon on the basis of size; length of P- 11.2, width 7.8. In 
addition P- shows an interesting combination of features tending to 
bridge the morphological gap between this tooth in the holotype 
and in referred specimens from the west. The occlusal outline is 
broadly triangular with a wide talon, as in the holotype, but the 
anterior margin is indented more as in the Hagerman specimens. 
The cuspation of the talon is reminiscent of that in the holotype of 
T. kansasensis (Hibbard 1941a:fig. 5b) and is more complex than in 
any other specimen seen, with a strong hypocone, without a domi- 
nant protocone, having in its place a group of interconnected cus- 
pules in part expressed as crenulations of the cingulum, of which 
the anterior-most is strongest. 
The specimen is from Matthew Wash, west of Safford, 
Graham County, southeastern Arizona, and, though not strictly 
referable to any of the published Blancan local faunas in the vicinity 
of Safford, is clearly Blancan on the basis of associated fauna and 
magnetostratigraphic studies in progress (Tedford, pers. comm.). 
Also from the same area (southwest corner of Bear 
Springs Flat, west of Safford) is a left mandibular ramus lacking 
teeth, F:AM 63109, almost certainly referable to T. macrodon. 
F:AM 62740, nearly complete left mandibular ramus with 
canine, Pj, Pj, and Mj-. Measurements as in our Table 2: toothrow 
length 32.1; Pj length 4.1, width 2.6; Pj length 5.3, width 3.6; Mj- 
