408 
CLATJ8A. 
CLAUSA, d’Orbigny, 1854. 
[Bry. Cret. p. 893.] 
STNONYilS. 
Ceriopora, 2^ars, d’Orbigny, 1850. 
Fustuliporoy pars, von Hagenow, 1851. 
Entalophora, pars, d’Orbigny, 1851. 
Claviclausa, d’Orbigny, 1854. 
Eeteropora, pars, Pergens, 1890. 
Stigmatopora, pars, Hamm, 1881. 
Diagnosis. 
Clausidse with an erect dendroid zoarium formed of a single 
bundle of zooecia. 
Type Species. 
Ceriopora heteropora, d’Orbigny, 1850. Cenomanian to Senonian : 
France. 
Apfinitles. 
This genus falls into two groups of species — those with thin 
stems and narrow zooecia and dactylethrse, and those with much 
broader zooecia and dactylethrae and often clavate stems. The 
latter includes the genus Claviclausa. The genus differs from 
Multiclausa as Meliceritites differs from Inversaria. 
1. Clausa heteropora (d’Orbigny), 1850.- 
Synonymy. 
Ceriopora heteropora, d’Orbigny, 1850. Prod. Pal. vol. ii. p. 184. 
Clausa „ 
Cla/viclausa clava, 
Seteropora ,, 
Entalophora „ 
Clausa compressa, 
Heteropora ,, 
d’Orbigny, 1853-4. Bry. Cret. p. 894, pi. 776, figs. 1-4. 
pars, d’Orbigny, 1853. Bry. Cret. pi. 765, fig. 5 {non 
p. 890, pi. 620, figs. 4-6). 
pars, Pergens, 1890. Eevision, p. 370. 
pars, Canu, 1897. Bry. Jan. ; Bull. Soc. geol. France, 
ser. 3, vol. xxv. p. 153. 
pars, Canu, 1897. Bry. St. Cal. : ibid. p. 747. 
Bucaille, 1890. Bry. Cret. Seine-Inf. : Bull. Soc. Sci. 
nat. Rouen, vol. xxv. p. 507. 
d’Orbigny, 1853-4. Bry. Cret. p. 895, pi. 766, figs. 5-8. 
Pergens, 1890. Re’sdsion, p. 373. 
