ORDER I PRIONODESMACEA 375 
Anoplophora (Sandb.), Koenen (Uniona, Pohlig), (Fig. 644). Right valve with a 
blunt thick cardinal tooth fitting into a socket in the opposite valve. Left valve 
beside the socket has a long posterior lateral tooth. Trias (Lettenkohle). A. donacina, 
Schloth.; A. lettica, Quenst. 
Trigonodus, Sandb. (Fig. 645). Cardinal tooth strong, triangular, sometimes 
divided, short, oblique, anterior; two elongate laterals in the left valves, and one 
A 


Fia. 644. 
Anoplophora lettica, Quenst. sp. 
Trias; Friedrichshall (after 
Alberti). 
Fic. 643. Fic. 645. 
A, Anthracosia carbonaria, Goldf. sp. Trigonodus Sandbergeri, Alberti. 
Permian ; Niederstaufenbach, near Kusel, Trias (Lettenkohle); Zimmern, 
Rhenish Bavaria. B, A. Lottneri, Ludw. Wurtemberg. A, Hinge, from a 
sp. Coal Measures; Hannibalzeche, near reverse impression of cast. B, 
Bochum, Westphalia (after Ludwig). Natural cast. 1/3. 
lateral in the right valve. Trias; especially common in the Lettenkohle dolomite 
and the Raibl beds. 
Heminajas, Neumayr. Trias. H. (Myophoria) fissidentata, Wohrmann. 
Pachycardia, Hauer.. Oblong or trigonal, concentrically striate or smooth ; beaks 
nearly terminal, curved, adjacent, with a lunule; anterior end inflated, blunt ; 




Fic. 646. 
Cardinia hybrida, Sow. Lower Lias; Ohrsleben, near Halberstadt, Saxony. 
posterior compressed ; two strong divergent cardinal teeth in each valve, the anterior 
on the right being weaker and nearly marginal ; each valve has also a long posterior 
lateral tooth. Alpine Trias. 
Cardinia, Agassiz (Thalassites, Quenst.), (Fig. 646). Oblong, thick, short anteriorly, 
rounded. Cardinal teeth weak or obsolete, posterior lateral strong. Lower Lias, and 
reported also from the Dogger. 
? Nyassa, Hall. Devonian. ? Guerangeria (Davousti), Oehlert. Lower Devonian. 
