AVLOPORA 



61 



Description. — "Corallum small, subglo- 

 bose, obtusely subturbinate ; rounded and 

 apparently retaining some remains of a scar 

 of attachment at the base. Cells four or 

 more, rather irregularly disposed, circular, 

 and moderately deep. Surface slightly more 

 coarsely marked than the last [Sphenopo- 

 terium compressum Meek and Worthen] 

 but otherwise similar. 



"Height, 0.45 inch; transverse diameter 

 about 0.43 inch ; breadth of cells, about 

 0.18 inch." (Meek and Worthen, 1860, 

 p. 448). 



Occurrence. — Localities 12, 44, 82, 83, 



Material. — Specimens studied, 2. Pri- 

 mary types from the Rockford limestone. 

 University of IlHnois No. 10858. Keyes' 

 specimens may be lost, therefore his iden- 

 tification of the species from the Louisiana 

 limestone can not be checked. 



Family Syringoporidae Milne-Edv^ards 

 and Haime 



Genus Syringopora Goldfuss, 1826 



Diagnosis. — Corallum fasciculate ; cor- 

 allites thin, connected by lateral tubes ; septa 

 very short or absent; tabulae steeply in- 

 clined proximally, inosculating to form 

 inner v^^all. 



Genotype.— Syringopora ramulosa Gold- 

 fuss, 1826. 



Occurrence. — Widely distributed, Silu- 

 rian through Carboniferous. 



Remarks. — Drymopora Davis, 1887, is 

 a subgenus of Syringopora, according to 

 Bassler (1915, p. 463). Lang, Smith, and 

 Thomas (1940, p. 137) point out that 

 Vaughanites Paul, 1937, is a junior hom- 

 onym, VaughanttesW^oodinng^ 1928, having 

 priority, and suggest that no nev^^ name be 

 proposed for Paul's subgenus. They (idem, 

 p. 65) consider Harmodites Fischer von 

 Waldheim, 1828, to be an objective synonym 

 of Syringopora. 



Syringopora harveyi White 



Plate 13, figures 7, 8 



Syringopora Har'veyi White, 1862, Boston Soc. 



Nat. Hist. Proc, vol. 9, p. 32. 

 fSyringopora Haweyif, White, 1874, Prelim. 



Rept. Invertebrate Fossils, p. 17. 

 fSyringopora Har'veyi?, White, 1877, U. S. Geog. 



Survey W. 100th Merid., vol. 4, p. 80. 

 fSyringopora Jiarveyif, Keyes, 1894, Missouri 



Geol. Survey, vol. 4, p. 141, pi. 14, fig. 6a. 



Syringopora har'veyi, Shepard, 1898, Missouri 

 Geol. Survey, vol. 12, pt. 1, p. 122. 



Syringopora har'veyi, Moore, 1928, Missouri Bur, 

 Geol. Mines, Ser. 2, vol. 21, pp. 97, ?128, 



?154, 189, 195. 



Externals. — Corallum small, corallites 

 very thin, straight to slightly curved, about 

 1 to 1.5 mm in diameter, tending to be con- 

 nected in threes at w^ide intervals ; epitheca 

 smooth to minutely striate. 



Transverse section. — Septa about 20, ex- 

 tremely short, thin, not always distinguish- 

 able, may occur as septal crests on tabulae 

 towards axis of corallite. Tabular intersec- 

 tions elongate oval, generally constricted 

 across shortest axis. 



Longitudinal section. — Tabulae dipping 

 steeply toward axial tube, which is crossed 

 by tabulae or diaphragms spaced more 

 widely than outer tabulae. 



Occurrence. — Localities 1, 2, 23, 55, 59, 

 63, 65, 74, 87. The original specimens were 

 collected from the "Chemung beds, and the 

 lower division of the Burlington limestone, 

 Burlington, Iowa." The first of these can be 

 interpreted as Kinderhook generally, but 

 the second locality has no meaning. 



Material. — Specimens studied, 4. Loca- 

 tion of primary types unknown ; plesiotypes. 

 University of Missouri No. 2238, Illinois 

 State Geological Survey No. 3508; other 

 specimen (formerly cotype of Z. tantilla), 

 University of Cincinnati No. 24315. 



Remarks. — The species can be distin- 

 guished from some other members of the 

 genus by its thin corallites, but the lack of 

 published figures of internal structure in 

 the genus makes synonymies uncertain. Spe- 

 cies of Syringopora should be more ade- 

 quately figured so that detailed comparisons 

 can be made. 



The specimen of Syringopora included in 

 the cotypes of Z. tantilla was a fragment of 

 the same shape and size as that species and 

 the calyx was filled with limestone matrix. 

 Z. tantilla is omitted from the synonymy of 

 S. harveyi because its inclusion w^ould be 

 apt to be more confusing than clarifying. 



Family Auloporidae Nicholson, 1879 



Genus AuLOPORA Goldfuss, 1829 



Compound corals composed of creeping tubes 

 connected by their entire lower surfaces to shells 

 or other foreign bodies. Colony multiplies by tubes 

 budding frm below calyx mouth; tubes seldom 

 in contact except at point of attachment to parent. 



