Contributions to the anatomy of anthropoid apes / by Frank E. Beddard.
- Frank Evers Beddard
- Date:
- 1893
Licence: Public Domain Mark
Credit: Contributions to the anatomy of anthropoid apes / by Frank E. Beddard. Source: Wellcome Collection.
87/246 page 239
![0. magnoaperta is closely allied to some Upper Cretaceous species; of these 0. cyclo- stoma (Goldf.) [Eschara cyclostoma, Goldfuss, ‘Petrefacta Germanise,’ Th.i. 1826, p. 23, pi. viii. fig. 9] appears to be about the nearest; the evidence for referring it to Onycho- cella is given by von Hagenow’s figures [No. 2, p. 75, pi. ix. figs. 7, 8, pi. xii. fig. 3] : from this, which is biflustrine in habit, it may be distinguished by its clithridiate aperture; the avicularian cells agree in general character. From 0. koninckiaua (Hag.) Cellepora (Discopora) koninckiana, Hag. ib. p. 95, pi. xi. figs. 10, 11] it differs in the ovate shape of the avicularian cells, which in the Maastricht species are lanceolate. 0. santonensis, D’Orb. [Eschara santonensis, D’Orbigny, No. a, p. 109, pi. 673. fig. 4], agrees with it in the large size of the aperture and the shape of the avicularia; but the ooecia in that species are pyriform, the lamina larger, and the lower side of the mouth straight. 0. drya, D’Orb. [Eschara drya, ib. p. 168, pi. 677. figs. 7-9], has also a large aperture, but this is much wider and not clithridiate; the zooecia are also different in shape. D’Orbigny has figured amongst his Escharas a large series of species which must be referred to Onychocella, though many of them may be reduced to synonyms. rom most of them, such as 0. allica (D’Orb.), 0. archosia (D’Orb.), 0. charonia (D’Orb.), 0. clito (D’Orb.), and 0. cressida (D’Orb.), the new species may be distin- guished by its large aperture. The occurrence of the genus Onychocella in Cretaceous rocks has been frequently pointed out; the British Museum Collection contains a specimen from the Calcaire a polypiers (Bathonian) of Ranville, that must be referred to this genus. Suborder SCHIZOTHYRIATA. Family SCHIZOPORELLIDaE. (Myriozoidoe of Plincks.) Genus Schizoporella, Hincks. Diagnosis. See Hincks, No. 2, p. 237. Species 1. Schizoporella magnoaperta, n. sp. Diagnosis. Zoarium, a foliaceous expansion. Zooecia somewhat irregularly arranged, though with a tendency towards quincuncial. In shape they are pyriform, well rounded above, tapering below. The front wall is tumid, forming a raised triangular area. A raised lip around the orifice, which is oval ; the sinus is median, small but distinct. The zooecia are separated by a depressed flat margin, around which is a row of large deep areolse. Avicularia one on each zooscium, beside and below the orifice; they have raised, elliptic borders. Ooecia 1 Distribution. Barton Beds, Barton.](https://iiif.wellcomecollection.org/image/b28141386_0087.jp2/full/800%2C/0/default.jpg)
