212 
PROFESSOR H. G. SEELEY ON THE STRUCTURE, ORGANIZATION, 
extended between them. Much more complete remains of the shoulder-girdle are 
preserved in the Freiberg specimen, but the bones figured by vox Meyer are not 
easily understood, and are very different from the bones in the Munich fossil. They 
are probably displaced, and till I have examined the original can offer no decisive 
opinion on structures which appear to unite the characters of Plesiosaurs and 
Fig. 5. 
Dinosaurs with distinctive ordinal characters. The scapula is formed on the Notho- 
saurian type, while the coracoid is unlike that of any Nothosaur, and might be 
Lacertilian or Dinosaurian. And the arch appears to include other elements, which 
are probably the interclavicle and clavicles ; so that the resemblance to Dinosaurs 
which appears to be indicated by the bones in the Munich slab may have to be 
modified in favour of a more generalised interpretation of affinity. 
Tire fore-limb is much smaller than the hind-limb. The form of the humerus with 
its expanded ends might be Rhynchocephalian, Lacertilian, or Dinosaurian. One 
large humerus figured by vox Meyer as the Fulda specimen is quite Dinosaurian 
and has a large radial crest, but there is no proof that this can be referred to the 
same genus as Spexer’s fossil, though the small specimens appear to have a similar 
form and to possess a radial crest; but this might be Lacertilian as well as Dinosaurian. 
The smaller limb bones are equally remarkable for wanting characters suggestive of 
definite affinity with existing Reptiles. They are not Crocodilian, not like any Lizard 
known to me, and not typically Dinosaurian, but only to be described as of generalised 
type. The carpus consists of rounded bones, of which five form a distal row corres¬ 
ponding to the five metatarsals, and three the proximal row, which lies on the radial 
side, so that the ulna appears to articulate directly with the fifth distal carpal. If in 
form of the bones the corpus appears Plesiosaurian, it is as much Cetacean in that 
respect, and in structure makes as near an approach to Mammalian type as to Reptiles. 
