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7 results for “Sphenosuchia”
Figure 7. One subtree from a in Two new basal crocodylomorph archosaurs from the Lower Jurassic and the monophyly of the Sphenosuchia
Figure 7. One subtree from a reduced consensus analysis using the RadCon program (Thorley & Page, 2000). The MPTs from the phylogenetic analyses with characters 22 and 23 ordered or replaced by binary characters produced slightly different sets of reduced consensus subtrees. This subtree, from the analysis with 22 and 23 ordered, shows the sphenosuchian Terrestrisuchus closer to the crocodyliforms Protosuchus and Alligator, a relationship not found in any subtree of the other analysis.
Figure 6 in Two new basal crocodylomorph archosaurs from the Lower Jurassic and the monophyly of the Sphenosuchia
Figure 6. Strict consensus (A) and Adams consensus (B) of 151 most parsimonious trees (MPTs) resulting from the PAUP analysis of the data matrix in Table 1 (outgroups omitted in figure). Each MPT has a length of 64 steps, a Consistency Index (C.I.) of 0.609, and a Retention Index (R.I.) of 0.679. Reanalysis with characters 22 and 23 recoded as pairs of additive binary characters recovered 38 MPTs, each with a length of 62 steps, and with a less resolved strict consensus, but the Adams consensus, C, shows much more resolution.
Figure 5 in Two new basal crocodylomorph archosaurs from the Lower Jurassic and the monophyly of the Sphenosuchia
Figure 5. Kayentasuchus walkeri gen. et sp. nov. Holotype. Lateral view of right ilium and femur. Abbreviations: at =?antitrochanter; tq = fourth trochanter; pi.t = possible homologue of pseudointernal trochanter in Hallopus (Walker, 1970). Scale bar = 1 cm.
Figure 1 in Two new basal crocodylomorph archosaurs from the Lower Jurassic and the monophyly of the Sphenosuchia
Figure 1. Litargosuchus leptorhynchus gen. et sp. nov. Skull in (A) dorsal and (B) ventral views. Abbreviations for Figs 1, 2: ao.f = antorbital fenestra; ar = articular; cb = ceratobranchial I; d = dentary; e.m = external mandibular fenestra; ec = ectopterygoid; en = external naris; f = frontal; j = jugal; l = lacrimal; m = maxilla; n = nasal; or = orbit; p = parietal; pl = palatine; pm = premaxilla; prf = prefrontal; po = postorbital; po.p = paroccipital process; pt = pterygoid; q = quadrate; sq = squamosal; sp. = splenial; v = vomer. Scale bar = 1 cm.
Figure 4 in Two new basal crocodylomorph archosaurs from the Lower Jurassic and the monophyly of the Sphenosuchia
Figure 4. Kayentasuchus walkeri gen. et sp. nov. Holotype skull. A, ventral view of the braincase with its floor removed. B, medial view of the side wall of the braincase. Abbreviations: bs.s = space within the body of the basisphenoid; en.d = endolymphatic duct; ls = laterosphenoid; m.an = mastoid antrum; ot = otoccipital; p = parietal; po.p = paroccipital process; pt.f = post-temporal foramen; pr = prootic; q = quadrate; so = supraoccipital; sq = squamosal; ve = vestibule; VIII = foramen for cranial nerve VIII (n. vestibulo-cochlearis). Scale bar = 1 cm.
Figure 2 in Two new basal crocodylomorph archosaurs from the Lower Jurassic and the monophyly of the Sphenosuchia
Figure 2. Litargosuchus leptorhynchus gen. et sp. nov. Skull in (A) left lateral and (B) right lateral views. Scale bar = 1 cm.
Figure 3 in Two new basal crocodylomorph archosaurs from the Lower Jurassic and the monophyly of the Sphenosuchia
Figure 3. Kayentasuchus walkeri gen. et sp. nov. Holotype skull. A, left lateral view of reconstructed skull; shape of dentary probably distorted during fossilization. B, posterior view of occiput as preserved. Abbreviations: ao.f = antorbital fenestra; d = dentary; e.m = external mandibular fenestra; f. m = foramen magnum; g = lateral groove on squamosal; j = jugal; l = lacrimal; m = maxilla; n = nasal; or = orbit; ot = otoccipital; p = parietal; pm = premaxilla; po.p = paroccipital process; pt.f = post-temporal fenestra; so = supraoccipital; sq = squamosal. Scale bar = 1 cm.
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