Fig. 
Figs. 
Figs. 
14: 
» 12-15. 
16-19. 
20-22. 
rs. 23-25. 
26-29. 
30-31. 
32-34. 
41, 42. 
43. 
PLATE XXI. 
RHYNCHONELLA DECKERENSIS nN. Sp..........--..:---; A 
Pedicle, brachial, anterior and lateral views of a nearly 
complete individual. Nearpass section, Locality 8 A. 
RHYNCHONELLA AGGLOMERATA Nl. SpP........---------e> 
Brachial, pedicle, lateral and anterior views of a complete 
individual. Nearpass section, Locality 2A. 
. Brachial, lateral and anterior views of a smaller indi- 
vidual. Nearpass section, Locality 2A.” 
WILSONIA GLOBOSA MT. SP... 2.2... eee wee eee eee ee eee eee 
Serial sections through the posterior portion of the shell, 
showing internal structure. Nearpass section, Lo- 
cality 2 A.” 
Lateral, brachial, pedicle and anterior views of a very 
globose individual. Same locality. 
Lateral, brachial and anterior views of a less globose in- 
dividual. Same locality. 
NOU GDNe IVI UUe Is EMll, soa bobonb pag bobooo uno oH OS 3 
Brachial, lateral and anterior views of a large individual. 
Nearpass section, Locality 2A.” 
Brachial, pedicle, lateral and anterior views of another 
individual. Same locality. 
RHYNCHOSPIRA FORMOSA Hall......... EER bie a oe 
Brachial and lateral views of an incomplete, subglobose 
individual. Nearpass section, Locality 2A.” 
Anterior, brachial and lateral views of another less globose 
individual. Same locahty. 
ATRYPA RETICULARIS (Iuimm:)-...2..522--2--.-----.-- 
_ A rather large brachial valve, with lamellate extensions 
of the shell. Nearpass section, Locality 2A. 
Profile of the same in outline. 
7. A smaller pedicle valve. Same locality. 
WHITFIELDELLA NUCLEOLATA (Hall)..........--.----- 
. Brachial, pedicle and lateral views of a complete indi- 
vidual. Nearpass section, Locality 2A.” 
SPIRIFER VANUXEMI val. MINOR n. Var..-.-----------:- 
Two views of a complete pedicle valve. Nearpass section, 
Locality 2A.° 
SPURMRER Sp. WNdet. 5. cisce o- ere ciel elas= mere ye c= cis) 
An incomplete pedicle valve. Nearpass section, Locality 
OeARS 
(417) 
234 
i) 
(wu) 
OU 
bo 
(ae) 
-] 
241 
238 
