The parietal margin is thin, rounded, granulated, common to the adjacent zooecia; the cryptocyst is flat, smooth and shorter than the opesium. Description.—The zoary is a small, truncated, stout cone; the base is slightly convex and decorated with sinuous radial lines; bee. The zooecia are distinct, separated by their wall edge, arranged in radial rows, hexagonal.
The wall margin is thin, distinct; the cryptocyst is large, concave, deep, smooth; opesium is terminal, round, edged with a prominent thread. Zooecia are large, distinct, separated by a very deep furrow, elongated, elliptical; the gymnocyst almost completely surrounds the opesium; is convex and. 9 TERTIARY BRYOZOA CANU AND BASSLER 5 bifurcate apophysis on one side only; opesia is elongated, elliptical, asymmetrical.
The mural is very thin, filiform, rounded, smooth; it bears distally a small triangular, transverse avicularium; the opecium is very large and of the same form as the zooecium. The mural is thin, rounded, smooth; the opesium is very elongated, elliptical, terminal.
NO. 9 TERTIARY BRYOZOA CANU AND BASSLER Division COILOSTEGA Levinsen, 1909
10 SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. 93 VIBRACELLA Waters, 1891
Zooecia distinct, separated by a shallow furrow, very large, hexagonal, elongated or transverse; the cryptocyst is small, smooth, slightly concave. The vibraculae are very large, ear-like, primordial; the inner distal portion is shallow. On the underside of the zoarium there are broad radial ribs, convex, each perforated by two rows of large irregular lunular pores. Thezoecia are distinct, separated by a shallow furrow, elongated, elliptical, narrowed at the base; the wall edge is slightly convex, slightly thickened, granular; cryptocyst shallow, flat, granular.
The opesium is large, terminal, semi-Hptic, transverse. the polypid tube is long, oblique, smooth, very narrow, dilated. Thezooecia are distinct, separated by a wall margin. very elongated, narrow, subrectangular; rimist mural, rounded, prominent, united with peristome; the cryptocyst is concave, rather deep, finely granulated. 93 oblong, hexagonal; the cryptocyst is convex and forms an elongated, hexagonal shallow; the cryptocyst is convex and forms a shallow cavity in front of the aperture.
The zooecia are distinct, separated by their wall margin, elongated, hexagonal, arranged alternately in transverse rows; themural margins are thick, conspicuous, triangular in section; the cryptocyst is deep, hollow, very fine-grained and completely surrounds the opesium. Description. The zoary is free, unilamellar, with the leaves formed from three longitudinal rows of zooecia.
NO. 9 TERTIARY BRYOZOA CANU AND BASSLER 1
The zooecia are distinct, separated by a furrow, very elongated, elliptical; the mural rimis very thick, smooth, completely surrounding the cell; the front is perforated by small lacunae separated by small granules. Two oblique, triangular avicularia are symmetrically arranged on each side of the proximal border of the aperture.
NO. 9 TERTIARY BRYOZOA — CANU AND BASSLER 1
Description.– The zoarium is articulated; the segments are large, club-shaped, slightly compressed at their ends. The zooecia are not clearly distinguishable, much elongated; the frontal is convex, smooth, bounded by large pores, and formed by an epicalcification that conceals the peristomy and is supported by thin trabeculae radiating from the ascopore. The zooecia are distinct, separated by a groove, large, elongated, capital; the front is convex and pierced by scattered pores.
On the dorsal side of the zoarium, the zooecia are distinct, sub-hexagonal, separated by prominent thick bands, forming interzooecial epicalification. Zooecia are distinct, separated by a large prominent, somewhat elongated, hexagonal thread; the frontal part is convex, pierced by numerous small vibrations separated from each other by prominent spine-shaped granules. Thezooecia are distinct, separated by a prominent, slightly elongated, hexagonal thread; frontal. it is transversely concave, formed by a tremocyst with small pores separated by regular tuberosities.
The zooecia are distinct, separated by a furrow bordered by two very thick prominent threads, large, very elongated, sinuous; the frontal isatremocyst, slightly convex and pierced by fairly large pores. Thezooecia are distinct, separated by a prominent thread, large, rectangular, somewhat elongated; the front is slightly convex, almost flat, and formed by a granular tremocyst with numerous pores. Description.- The zoarium is free, cylindrical, bipartite, very thin, formed by only four rows of cells.
The zooecia are distinct, separated by a furrow, somewhat elongated, lozenge-shaped, broad; the front is convex, smooth. The zooecia are slightly distinct, vaguely separated by a white line irregularly placed between the areolar pores, oblong; the front is narrow, bordered by two scattered rows of areolar pores that conceal the small apparent pleurocyst. The zooecia are slightly distinct, elongated, irregular; the front is convex, ornamented with a longitudinal, median gibbosity surrounded by a double row of scattered areolar pores, often separated by pseudocostules.
The zooecia are distinct, separated by a furrow, ogival, broad, often transverse; the front is convex, very porous, with a much reduced pleurocyst. The zooecia are distinct, separated by a furrow, very large, ogival, very broad, transverse; the front is convex, porous, bordered by three rows of areolar pores, leaving only a small frontal pleurocyst.
28 SMITHSONIAN MISCKLLANKOUS COLLECTIONS VOL. 93
NO. 9 TERTIARY BRYOZOA CANU AND BASSLER 29 the frontal is convex, formed by a granular tremocyst with very small
30 SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. 93
9 TERTIARY BRYOZOA CANU AND BASSLER 3Ioblong, a little wide; the frontal part is slightly convex and is formed by elongated, small widths; the frontal part is slightly convex and is formed by a large pleurocyst forming a smooth, elliptical cushion or shield; it is surrounded laterally by a double row of areolar pores, and proximally by four rows of scattered pores. Another small zooecial avicularium is placed laterally on the outer line of areolar pores and a. Zooecia distinct, separated by a very deep furrow, elongated, spherical, very distinct; the frontal part is rather convex, finely granular, laterally pierced with two or three pores.
The zooecia are distinct, separated by a deep furrow, large, oblong-globose; the front is very convex, with two to four large ridges. The aperture is large, elliptical, transverse, oblique, often mucronate; the peristome is thick and granulated like the frontal. Description.- The zoarium is unilamellar, free; the leaflets are narrow, bipartite, formed of about seven longitudinal rows of cells.
NO. 9 TERTIARY BRVOZOA CANU AND BASSLER 33
The ovicle is hyperstomic, closed with an operculum, large, spherical, of the same nature as the frontal. Description.- The zoarium is single-layered, the zooecia are distinct, separated by a very deep furrow, elliptical, very short, swollen; the front is very convex and is formed by a smooth pleurocyst surrounded by four or five rows of large areolar pores. Zooecia are distinct, separated by a protruding thread, polygonal, elongated; the frontal part is slightly convex, smooth, lined with very small and numerous pores.
Zooecia distinct, separated by a protruding thread, strongly elongated, fusiform; the frontal part is convex, surrounded by small and very numerous areolar pores and formed by a gathered pleurocyst. The peristome is convex, thin, elliptical, elongated; its .. proximal border bears a small mucron inclined into the peristomial .. aperture visible at the base of the peristomial. The peristome is suborbicular or elliptic .. the peristome is convex, thin, sharp, complete, with a small proximal spiral.
The . zooecia distinct, separated by a small conspicuous thread, somewhat fusiform, elongated; the front is convex, finely granulose and perforated by some scattered pores. The zooecia are distinct, separated by a large conspicuous thread, rectangular, short, elongated; the front is somewhat convex and perforated by a dozen large pores. The zooecia are distinct, separated by a conspicuous thread, elongated, fusiform; the front is convex, covered by tremopores separated by tuberosities.
Zooecia distinct, separated by a thick thread, very sahent, smooth; they are elongated, polygonal; the frontal part is slightly convex and perforated with large, expanded tremopores. Zooecia distinct, separated by a small protruding thread, elongated, elliptical, large; the frontal part is convex and perforated with numerous small tremopores. Zooecia indistinct with thick walls, very long; the frontal part is convex and covered with numerous tuhular treniopora.
Description.— The zoarium is free, bimellar; the leaves are cylindrical, flabellate or lamellate and narrow, split; there are from one to seven longitudinal rows of fauna on each branch. Description.— The zoarium is free, very long, filiform, composed of four longitudinal rows of zooecia, opposite two to two. Zooecia distinct, separated by a small, slightly prominent thread, very large, very long, tubular; the frontal part is very convex, fibrous and laterally ornamented with numerous small areolar pores.
44 SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. 93 Family CELLEPORIDAE Busk, 1852
NO. 9 TERTIARY BRYOZOA CANU AND BASSLER 45 Family ORBITULIPORIDAE Canu and Bassler, 1923
EXPLANATION OF PLATES
46 SMITHSONIAN MISCF.LLANEOUS COLLECTIONS VOL. 93 PAGE
NO. 9 TERTIARY BRYOZOA CANU AND BASSLER 47 PAGE
48 SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. 93 PAGE
NO. 9 TERTIARY BRYOZOA CANU AND BASSLER 49 PAGE
50 SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. 93 PAGE
NO. 9 TERTIARY BRVOZOA CANU AND BASSLER 5I PAGE
NO. 9 TERTIARY BRVOZOA — CANU AND BASSLER 53 PAGE
54 SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. 93 PAGE
TERTIARY CHEILOSTOME BRYOZOA FROM VICTORIA, AUSTRALIA
