FROM NORTHWESTERN EUROPE 85 
echinoids together with numerous branching corals. S. moescht was the most 
common brachiopod, followed in numbers by the smooth terebratulids, while the 
ribbed terebratulids were the rarest element of the fauna. 
REMARKS. In discussing Septaliphoria moravica (Uhlig), Wisniewska suggested 
that Rhynchonella trilobata var. Méschi was probably a synonym. Unfortunately, 
the author has not seen the original specimens of Uhlig, Haas or Wisniewska. 
Judging from the published figures and assuming these to be typical, it would appear 
that the specimens described by Wisniewska are conspecific with S. moescht (Haas) 
and that “‘ Rhynchonella”’ moravica Uhlig is probably a separate species, the latter 
being differentiated by its more trilobate form. However, “ R.” moravica, which 
occurs in the bimammatum zone is almost certainly congeneric. 
In 1964, Makridin divided R. moeschi Rollier into two subspecies, namely moescht 
moescht and moeschi donetziana. He then selected the latter as the type of his new 
genus Praecyclothyris ; however, as under the international rules of nomenclature 
the type must be moeschi moescht; it is suggested that Praecyclothyris is a synonym 
of Somalirhynchia Weir. As Somalirhynchia is not mentioned in the Russian 
“Treatise ’’, it is assumed that the rather obscure publications in which it has been 
described are not known to palaeontologists in the Soviet Union. 
Subfamily CYCLOTHYRIDINAE Makridin, 1955 
Genus SEPTALIPHORIA Leidhold 
1920 Septaliphoria Leidhold: 354-55. 
1932 Septaliphoria Leidhold; Wisniewska: 18-20. 
1960 Septaliphoria Leidhold; Makridin: 251-52. 
1964 Septaliphoria Leidhold; Makridin: 96-7. 
1965) Septaliphoria Leidhold; Ager: H6r19. 
TYPE SPECIES. Rhynchonella arduennensis Oppel, by original designation. 
EMENDED DIAGNOSIS. Medium sized, subpentagonal rhynchonellids ; 10-25 
coarse, simple, subangular ribs ; septalium present ; crura radulifer. 
STRATIGRAPHICAL RANGE. Oxfordian—?Kimmeridgian. 
DESCRIPTION. External characters. The genus consists of ordinary looking 
uniplicate rhynchonellids, having a tendency towards asymmetrical development of 
the anterior commissure. The complete, bilobed asymmetry characteristic of 
Torquirhyncha is very rarely found and in most cases the asymmetry of the anterior 
commissure has resulted from displacement of the uniplication. Septaliphoria is 
biconvex with the brachial valve the more inflated ; there is no posterior smooth 
area. 
The well developed, suberect beak is flanked by beak ridges which limit an incurved 
interarea. A large, hypothyridid or submesothyridid pedicle opening is present ; 
the deltidial plates are usually, but not invariably, conjunct. 
Internal characters. Pedicle valve. The dental lamellae are subparallel and 
relatively short. The teeth may be slightly crenulated ; lateral denticulae are 
variably developed. 
