. Brachiopod genera of the suborders Orthoidea and Pentameroidea. Orthoidea; Pentameroidea; Paleontology -- Paleozoic. 178 GENERA OF THE SUBORDERS ORTHOIDEA AND PENTAMEROIDEA hinge-line gently arcuate; cardinal extremities round- ed; lateral profile subequally biconvex. Anterior com- missure usually rectimarginate. Fold present or ab- sent on both valves. Interareas obsolete; ventral beak curved over the dorsal; umbo prominent. Surface P. cylindrktis Hall and Whitfield 1872 P. diver gens Foerste 1909 P. oblongus Sowerby 1812 HaU 1852 P. farvulus Savage 1913 />. ^ffwrw Whitfield 188
. Brachiopod genera of the suborders Orthoidea and Pentameroidea. Orthoidea; Pentameroidea; Paleontology -- Paleozoic. 178 GENERA OF THE SUBORDERS ORTHOIDEA AND PENTAMEROIDEA hinge-line gently arcuate; cardinal extremities round- ed; lateral profile subequally biconvex. Anterior com- missure usually rectimarginate. Fold present or ab- sent on both valves. Interareas obsolete; ventral beak curved over the dorsal; umbo prominent. Surface P. cylindrktis Hall and Whitfield 1872 P. diver gens Foerste 1909 P. oblongus Sowerby 1812 HaU 1852 P. farvulus Savage 1913 />. ^ffwrw Whitfield 1882 Table 20 Lissoccelina Pentameroides CapeUiniella Pentamerus Holorhynchus Platymerella «â. Rhipidium (costate) Brooksina Cymbidium / Conchidium. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Schuchert, Charles, 1858-1942; Cooper, G. Arthur (Gustav Arthur), 1902-. New Haven, Conn. [Tuttle, Morehouse & Taylor Co. ]
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