SCHUCHERT.] 



CLASSIFICATION OF TELOTREMATA. 



121 



2. Family LINGULID^ Gray, 1840. 



Liugulhl:.' Gill, 1)S71. 



Attenuate, subtxuadrate or si)atulate, almost Ciiuivalved Lingulacea, 

 derived tluoiigli LiugiiU'llid;e, with a more or less long', tubular, flexible 

 pedicle. Muscles highly dilleientiated and consisting of six pairs, two 

 of adductors, and four of sliders, or adjustors. 



Lingula Bruguicre, 17l>2. 



Pharetra Bolton, 1798. 

 Lingiilarins l")umi''ril, 18(^6. 



Glossina Phillips, 1848. 



Dignoniia Hall, 1871. 

 Glottidia Dall, 1870. 

 Barroisella Hall and Clarke, 1892. 

 Tomasina Uall and Clarke, 1892. 



3. Family LINGULASMATID.E Winchell and Schuchert, 1893. 



Platform-bearing Lingulacea derived through Lingulidie. 



Liugulops Jlall, 1871. I Lingulasma Ulrich, 1889. 



I Lingulelasma Miller, 1889. 



Order TELOTREMATA Beecher, 1891. 



Sclerobracliia Gray, 1SJ8; Kam|iylopegniata (partiui) Waagen, 1883; Pegmatobran- 

 cbiata (partim) Neiimayr, 1883. 



Articulate Brachiopoda, with the pedicle opening shared by both 

 valves in nepionie and early neanic stages, usually confined to one 

 valve in later stages, and becoming more or less modilied by deltidial 

 plates in ephebic stages. Brachia su^jported by calcareous crura, 

 looi)s, or sx)iralia. Prodeltidium absent. 



Superfamily RHYNCHONELLACEA Schuchert, 1896.' 



Rostracea Scbucbert, 1893; Ancistropegmata (partim j Zittel, 1895. 



Rostrate, i)rimitive Telotremata, with or without crura. 



1. Family PROTORHYNCHID^ Schuchert, 1896.' 

 Primitive Rhynchouellacea, without deltidial plates or crura. 

 Protorhyncha Hall and Clarke, 1893. 



2. Family RHYNCHONELLID.E Gray, 1848. 

 Ilypotbyritla' (partim) King, 1850; Rhyncbonellime Gill, 1871; Waagen, 1883. 



Rhyuchonellacea with more or less long crura. 



» Text-book of Paleontology, by Zittel and Eastman, 1896, p. 323. 



