NJGS - Bulletin 61-I. The Cretaceous Fossils of NJ - State of New ...

larger and more prominent than the ridges found on the outer surface
of the tube of H. fdcatus. (Usually only the filling of the tube is pre-
served.)
Range in New Jersey-
MAI3SHALLTOWN : 28
WENONAH : 34, 35
NAVESINK: Between Mount Holly and Pemberton (Prinee-
ton U.)
Type.-llarlboro, N. J.; NJSM 9680.
Hamulus squamosus Gabb 1859
Plate 5, Figures 1, 2
Hamulus squamosus, Gabh, 1859, Cat. of Invert. Fossils, in Proe. Aead.
Nat. Sci. Phil., vol. 11, p. 3.
Hamzclus squantosus, Wade, 1926, p. 45, 111. 10, figs. 6-7.
Hantzilus sqziantosus, Stephenson, 1923, p. 250, pl. 92, fig. 1.
Harnzclus sqziantosus, Stephenson, 1941, pp. 60-61, pl. 4, fig. 10.
Ham~ckcs sqzlumaszis, Howell, 1948, p.2, figs. 3-5.
Description.-Tube small, regularly tapering, posterior portion
more or less strongly curved, anterior portion becoming straight, the
curvature almost or entirely in one plane. The tube has on its outer
surface 6 longitudinal ridges, two of ~vbieh ,on opposite sides of the
tube, are extended laterally into flanges with irregularly serrated outer
edges (presumably to prevent the tube from sinking into the mud).
There is some variation in the size, form, sculpture, and degree of curvature
of the tube in different individuals.
Range in New Jersey-
MERCHANTVILLE : 16
Range outside New Jersey-
Georgk, Alabama, Mississippi.
Type.-Prairie Bluff, Ala. ANSP 16530 (cotypes).
Hamulus walkerensis Stephenson 1923
Plate 5, Figure 6, 9
Dentaliurn folcat~~a~, Whitficld, 1892, Pal. N. J., vol. 2, p. 169, pl. 20,
fig. 18 (not figs. 12-17). not of Conrad.
Harniclus walkerensis, Stephenson, 1923, pp. 74-75, pl. 10, figs. 9-10.
Han~ulus walkerensis, Howell, 1943, p. 159, pl. 20, fig. 4.
Description.-The anterior portion of the tube is straight and gently
tapering: the posterior portion is unknown. There are numerous low,
broad transverse rldges extending lengthwise of the tube. The species
is rare in New Jersey.
NEW JERSEY GEOLOGICAL SURVEY