122 



SYNOPSIS OF AMERICAN FOSSIL BRACHIOPUDA. 



Im-Li.. 87. 



Oitlioiliyiielmla Hall and Clarke, 



189o. 

 EhyncliotieuKi Hall, ISGO. 



Stenoc-liisma Conrad, 1839; Hall, 1867. 



RLyucLotrcta Hall, 1879. 

 Caiiuirota'cbia Hall and Clarke, 

 1893. 

 I'lethorbymlius Hall and Clarke, 

 1893. 

 Leioihyiichus Hall, 18G0. 

 Wilsouia Kayser, 1871. 



T^ncinnlina Bayle, 1878. 



Uiiciiiulus r.ayle, 1878. 

 Hypothyris King, ISAG (not Phil- 

 lips, 1841). 

 Pugiiax Hall and Clarke, 1893. 

 Eatonia Hall, 1857. 

 Cyclorbina Hall and Clarke, 1893. 

 Khychopora King, 1856. 



Ebynchoj)orina (Ehlert, 1887. 



Teiebratuloidea \\'aagen, 188.'). 

 lihyni-lionelhi Fisher (leWaldlicim, 

 1809. 



OxyrhyucliMS IJliwyd, l()9!t (not Arls- 



totli'). 

 Kliynjifonella Bronn, 1849. 

 Hicornes Qncnsttidt, 18.")1. 

 Rhynclionellopsls Bosc, 1894. 



Halorella Eittner, 1890. 

 Austriella Bittuer, 1890. 

 Norella IMttner, 1890. 

 Peregrinella Gibleit, 1887. 

 Rbyncbonellina Gemmelaro, 1871. 

 Dimerella Zittel, 1870. 

 Acautbotbyris d'Orbigny, 1850. 

 Hemitbyris d'Orbigny, 1847. 

 Frieleia Dall, 1895. 

 Cryptopora Jeffreys, 1869. 



Atretia Jefl'reys, 1876. 

 Neutretia CEhlert, 1891. 



Superfainily TEREBRATULACEA Waagen, 1883 (restricted).' 



Aucylopoda, Cryptobrachia, aud Ancylobracbia (partim) Gray, 1848; Kampylope;;- 

 uiata Waagcu, 1883; Ancylopegmata Zittel, 1895. 



Derived Telotreniata witb the bracbia supjiorted by calcareous, 

 primitive, or metaniorpbosed loops. 



Section A. TEREBBATULA. 



Terebratulacea. witb tbe loops unsupported by a median dorsal 

 septum at any stage of growth. Brachial cirri directed outward in 

 larval stages. 



1. Family CENTKONELLID.E Hall and Cbirke, 1895.^ 



Centrouellinii' Waageu, 1882; Beecher, 1893; lvensselaTid;r Hall and Clarke, 1895. 



Terebratulas witb the looj) developing direct and composed of two 

 descending lamelbe, uniting in the median line and forming a broad, 

 arched plate. 



' Terebratiilacea Waagen i.s nuptl lioro in preforence to Ancylobracliia Gray, in violation ot tlie law 

 of i)riority, for tlic sake of cu])linny. 



'Since Bceclicr'.s " ];evi.sion of the, families of looi)liearinj; l'racliio])oda'' (Trans. Conn. Acad., 

 Vol. IX, 1893), it lia.s been sliown l.y Uceilicr and Scliiicliert (I'roc. Uiol. Soc. Washington, Vol. VI [I, 

 1893) that tho looj) in tlio family Tcn-hratnlidiK, a.s limited in the former paper, does iu part pa.ss 

 throngli a .sliort scrit^s of luptamoi pIioHis. This iieicssitales the removal of Cenlronellinic from the 

 family Terebratulida-, since its loops remain essentially without change throughout growth. 



