USGS11613.1 cf. 'Tilia' cretacea Hollick HAPLTL147


USNM 406787



Locality Map  

USGS 11613

Lat. 60° 33' 32"N  Long. 165° 24' 16"W
Nunivak Island (C-1) Quad.


Leaf:  simple; asymmetrical; very wide obovate with the lamina more inflated one side than the other; apex obtuse; base lobate; margin dentate except at the base where it is entire, teeth irregular in size and spacing but in general two orders of size, the larger giving the appearance of weak lobing, the smaller teeth with acute angular apices with concave sides and wide rounded sinuses; venation basal perfect marginal actinodromous; primary midvein more or less straight, moderate to weak; pectinal veins moderate to weak, of the same strength as the midvein at the point of departure, arising at angles of 45°, on one side of the vein more or less straight or slightly curved, while on the other recurved sharply before continuing slightly curved to the margin; moderate pectinal abmedial veins departing pectinals at 35-45°, uniformly curved or more or less straight, sometimes branched, terminating at the margin; basal abmedial on one side forming weak b-pectinal; abmedials departing at 45° curved; superior secondary veins arising from the primary midvein at angles of 45°, near the base decreasing to 30° near the apex, the more basal superior secondaries less curved near the midvein than those nearer the apex otherwise the secondaries more or less straight, the more basal ones often branched, all craspedodromous; third order veins percurrent, more or less straight or convex, sometimes forked; fourth order veins not visible.


Hollick illustrates a specimen from the Kaltag Formation which he named 'Tilia' cretacea (Hollick 1930, p. 106; Plate 82, Fig. 3) which possesses a number of features seen in this specimen.  The only apparent difference is that Hollick's specimen has secondary veins arising at a constant angle along the length of the lamina.  'Sterculia' basiauriculata Hollick is another form from the Kaltag Formation (Hollick, 1930, p. 108; Plate 83, Fig. 5) which is indistinguishable from 'T.' cretacea and should be considered synonymous.