Cretaceous Dinosaurs 
25 
presented in this paper do not controvert that view as a generalization; 
but we must point out that the material at hand does not permit the iden- 
tification of Carolinian with Canadian dinosaurs on the generic level. In- 
deed, the closest affinities of the North Carolina dinosaurs appear to lie 
elsewhere. 
As noted in the preceding pages, the sauropod Hypsibema is in- 
distinguishable from Parrosaurus, a genus recorded from beds of early 
Maestrichtian age in Missouri. The carnosaur from Phoebus Landing is 
as similar to Dryptosaurus from the late Maestrichtian (and earlier) of New 
Jersey as it is to Albertosaurus. The single toe bone of an ornithomimid 
from North Carolina is comparable to ornithomimid bones from the early 
Campanian to late Maestrichtian of New Jersey and Delaware, as well as 
to Omithomimus from the Belly River beds. The hadrosaurian dentary 
tooth from Phoebus Landing has no close counterpart except in 
Lophorothon from the early Campanian of Alabama. 
Considering the quality of the evidence available, we suggest that firm 
conclusions about the affinities of the Black Creek dinosaur assemblage 
are unwarranted at present. Caution seems particularly appropriate in 
the light of our observation (Baird and Horner 1977) that the Upper 
Cretaceous dinosaur faunas of eastern and western North America have 
more in common with each other than had previously been recognized. 
And for purposes of biostratigraphic correlation, certainly, the evidence of 
the invertebrates must greatly outweigh that of the vertebrates. 
APPENDIX 
Homonymy of Coelosaurus [Owen] 1854 and Coelosaurus Leidy, 1865 
The generic name Coelosaurus first appeared on page 15 of a catalogue of 
the fossil reptiles and fishes in the museum of the Royal College of Sur- 
geons of England, published in 1854. Although no author’s name appears 
on the title page or elsewhere, the catalogue is known to be the work of 
Richard Owen and is always cited as “Owen (1854).” It is a work of 
original research and not a mere clerical compilation. 
In that publication the name Coelosaurus is accompanied by a diagnosis 
and etymology and is applied explicitly to a single bone, No. 58 in the 
collection. No species name is associated with the generic name. Under 
the International Code of Zoological Nomenclature (1961) we must ac- 
cept the generic name Coelosaurus [Owen] 1854 as validly published: it 
can be invalidated by neither its author’s anonymity [Art. 9(7), Recom. 
51 A] nor its uninominal status [Art. ll(c)(i)]. It is thus a senior 
homonym of Coelosaurus Leidy, 1865. As there is no appeal from the Law 
of Homonymy, Leidy ’s name must be rejected. 
