Figure 4 in Redescription of the phytosaurs Paleorhinus ('Francosuchus') angustifrons and Ebrachosuchus neukami from Germany, with implications for Late Triassic biochronology

Figure 4. Paleorhinus angustifrons (Kuhn, 1936), BSPG 1931 X 502. Interpretive line drawings of holotype skull in dorsal (A), ventral (B), posterior (C), and left lateral (D) views. Dark grey areas represent openings or sediment-infilled fenestrae. Light grey areas represent recessed areas of bone (antorbital fossa, fossa on squamosal adjacent to supratemporal fenestra). Cross-hatched areas are broken or restored surfaces. Abbreviations: afen, antorbital fenestra; afos, antorbital fossa; alvr, alveolar ridge; bo, basioccipital; bt, basal tubera; cho, choana; ect, ectopterygoid; en, external naris; fdp, depression on anterior end of frontal; fm, foramen magnum; fo, fossa; fr, frontal; itf, infratemporal fenestra; jg, jugal; jgb, series of bosses on lateral surface of jugal; lc, lacrimal; max, maxilla; na, nasal; ndp, depression on anterior end of nasal; occ, occipital condyle; orb, orbit; pa, parietal; pal, palatine; par, paroccipital process; pm, premaxilla; po, postorbital; pof, postfrontal; ppfor, postparietal foramen; prf, prefrontal; pt, pterygoid; ptf, posttemporal foramen; qd, quadrate; qf, quadrate foramen; q j, quadratojugal; sm, 'septomaxilla'; so, supraoccipital; sq, squamosal; sqr, paired ridges on lateral surface of squamosal; stf, supratemporal fenestra; sub, suborbital fenestra; subtf, subtemporal fenestra; v, vomer.