摘要
报道了安徽船山组所产的四射珊瑚,并对二新属广德珊瑚属和安徽珊瑚属作了描述。
Family Cyathopsidae Dybowski, 1873 Genus Guangdephyllum(gen.nov.)Type Species: Guangdephyllum typicum(gen.ei sp.nov.)Diagnosis: Corallum compound, fasciculate.Septa being of two orders. Septa of first order shorter,outer ends sometimes not extending to epitheca. Tabulae complete,flattened dome-like.Large cystosepiments present, but not formed cystosepimentarium.Dissepimentarium narrow.Remarks: This new genus is similar to Corphalia Poty.but the latter the corallum is simple.The present genus closely resembles Diphyphyllum Lonsd-ale.but the latter the cystosepiments is absent and the aulos present.It is also related to Lytvophyllum Dobrolyubova.but the latter thp simple lath-like columella often developed.Distribution: South Anhui;Upper part of Upper Carboniferous. Guangdephyllum typicum(gen..et sp.nov.) (Pl. I.Fig.1)Diameter of corallite 6-7mm.Septa being(16-18) × 2 in number.Septa of first order slightly thickened, as long as about 2/3 radius of corallite. Septa of second order very short, spine-like.Stereotheca slightly developed,measuring 4.5-5.5 mm in diameter.In longitudinal section, the dissepimentarium occupied by 1 accidentally 2 rows of large dissepiments. Tabulae complete, flattened dome-like, averaging 1-6 in number in 3 mm. Family Waagenophyllidae Wang, 1950 Genus Anhui phy Hum (gen. nov.)Type species: Anhuiphyllum typicum(gen.ei sp.nov.)Diagnosis: Corallum compound, aphroid.Septa being of orders. All septa irregularly extendpd into cysosepimentarium. Lateral dissepiments present. Syncolumella composed of median plate,radial lamellae and axial tabellae. Clinotabulae and tabulae developed.Remarks: This new genus most closely resembles Parapavona Wu et al., but the latter the corallum partly thamnasterioid and asteroid, the naotic septa irregularly developed.It may also be compared with Eovesotabularia X. Yu e Zhu,but the latter the lateral dissepiments absent, the septal zone regular.Distribution: South Anhui; Upper part of Upper Carboniferous. Anhuiphyllum typicum(gen.ei sp.nov.) (Pl.I,Fig.2)Distance between the centers of two adjacent corallites being 15-20mm. Septa 23*2 in number.Septa of the second order longer, 2/3-4/5 of the first order in length.Syncolumella elliptical, long axis 2.5-3.5 mm,composed of variable median plate,radial lamellae and axial tabellae.In longitudinal section, The dissepimentarium wider.The tabularium narrower, in its outer part cystoid clinotabulae developed,in its inner part tabulae slightly inclined toward the Syncolumella,6-8 in number in 3 mm.
关键词
石炭纪
船山组
珊瑚
四射珊瑚
安徽
tetracorals.Chuanshan Formation, Anhui province
