Frontosquamosal

In that specimen, however, “there is no trace of frontosquamosal arches although the specimen is well-preserved in dorsal view” ([4 ]: 69) and although the shapes of the skull and the ribs clearly indicate a morphologically adult, even peramorphic individual ([21 ]: plate VIII fig 2; reproduced in lower resolution as [4 ]: fig 16A).