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ERIK A : SON STENSIO 
ward-pointing lamella from the basisphenoid corpus; e, basipterygoid process; f lf dorsal process from 
the prootico-opisthotic (in this plate only the dorsal extremity); ifc, infraorbital sensory canal (in 
this plate only a part of it preserved in the postorbital); jc, jugal sensory canal (in this plate only 
preserved in the squamoso-preopercular); V, 2 , 3 , sinus in the dorso-lateral edge of the basisphenoid 
indicating the place of exit for the roots of the r. maxillaris trigemini, r. mandibularis trigemini, 
r. ophthalmicus trigemini, n. buccalis lateralis and n. ophthalmicus lateralis. 
Plate 6. 
Fig. 1. Wimania sinuosa n. sp. ; postorbital cheek plates and certain remains of the visceral ske¬ 
leton of the right side (cf. PI. 5, fig. 2). The same specimen as in 
PI. 4 (P- 25 7 ). 
» 2 . » » » » cheek plates and certain bones of the visceral skeleton of the left 
side. Counter part to the piece in PI. 5 fig. 4. (P. 25y). 
» 3. » » » » parts of the visceral skeleton of the right side showing the meta- 
pterygoid in its relation to the pterygoid and the basipterygoid 
process. A dorsal part of the posterior limb of the pterygoid 
removed in such a way that the metapterygoid is visible in its 
total extension. Anteriorly the metapterygoid is partly preserved 
as an impression of the lateral surface as is also the case with the 
greater part of the pterygoid. The same specimen as in PI. 4 (P. 25 j). 
» .4. » » » » parts of the visceral skeleton of the right side (partly the same as 
in figures 1 and 3). In this figure the dorsal end of the posterior 
limb of the pterygoid ( Pt ) in situ showing that the metapterygoid 
(Mptg ) is situated laterally of it. (P. 2 5 y). 
Explanation of index letters. 
Aup, autopalatine (impression of the outer side); Bsph, basisphenoid (here represented only by 
an end of the basipterygoid process e); C, coronoid; De, dental; Icor, pra, intercoronoideo-prearticu- 
lar; La. ju, lacrymo-jugal (posterior part only in this plate); Mptg, metapterygoid (in fig. 1 only the 
posterior end); Op, fragment of the operculum; Pa. it, parieto-intertemporal; Pco, precoronoid 
plates; Po, Postorbital; Pop. quj, preoperculo-quadratojugal; Pt, pterygoid (preserved as impression 
of the external surface; Scr, sclerotic plates; Sq. pop, sqamoso-preopercular; Stemp. ext, supra- 
temporo-extrascapular; e, basipterygoid process (distal part); ifc, infraorbital sensory canal (here 
only preserved in the postorbital and plate X); x, plate of bone pierced by the infraorbital canal. 
The plate has been situated between the postorbital and the upper (posterior) end of the lacrymo-jugal. 
Plate 7. 
Fig. 1. Wimania sinuosa n. sp., parasphenoid and preethmoid together with parts of autopalatine 
and prootico-opisthotic in ventral aspect. From the same specimen 
as PI. 4 (P. 257). 
» 2. » » » part of the ventral sarface of the prootico-opisthotic and the 
posterior part of the parasphenoid as impressions in the stone. To 
the right of both a part of the pterygoid of the right side. From 
the same specimens as the preceding figure (P. 25 y). 
» 3. » » » » head in ventral aspect. The same head is in PI. 4 (P. 25 7). 
» 4. indet. genus et spec. Detached prootico-opisthotic (right) in medial aspect; the posterior 
end with the process. Original of the figure belongs to the Royal State 
Museum at Stockholm. 
