Middle Jurassic (Bajocian) Eastern Oregon

PLATE 46
[All figures natural size unless otherwise indicated. Specimens shown in figs. 1-9 and 12 are from the upper part of the
Snowshoe Formation near Seneca; in figs. 10, 11, 13, and 14 from the Snowshoe Formation ncar Emigrant Creek; and
in fig. 15 from the Warm Springs Memher cf the Snowshoe Formation in the Suplee area]
FIGURES I-9. Stemmatoceras aff. S. albertense McLearn (p. 89) .
From Lupher's loc. 8
I, 2. Specimen, CAS I3522.
3- 5. Lateral and ventral views (X I) and suture line (X2) of largest
available specimen. CAS I3521.
6, 7. Specimen, CAS I3524.
8, 9. Specimen, CAS I3523.
IO, 11, I3. Teloceras itinsae McLearn (p.90).
IO. Rubber imprint of external mold. Specimen, USNM I686I4 from
USGS Mesozoic loc. 294IO.
II. Specimen, USNM 2686I6 from USGS Mesozoic loc. 26770.
I3. Rubber imprint of external mold. Specimen, USNM I686I5 from
USGS Mesozoic loc. 26770.
I2, I4. Zemistephanu.s? cf. Z. richardsoni (Whiteaves) (p. 90).
I2. Rubber imprint of small whorL Specimen, CAS I3255 from Lupher's
loc. 30.
14. Rubber imprint of medium-sized whorL Specimen, USNM I68617
from USGS Mesozoic loc. 29410. Note position of tuberles near
umbilicus.
15. Stephanoceras (Skirroceras) cf. S. (S.) leptogyrale (Buckman) (p. 88) .
Fairly complete internal mold, USNM I686IO from USGS Mesozoic
loc. 29241.