Fig 1.
"Goniopholis" paulistanus, original material described by Roxo [7].
A- right proximal fragment of a tibia (DGM 225-R); B- (DGM 258-R) and C- (DGM 259-R) isolated teeth. Scale bar = 10 mm.
Fig 2.
Geological map of the Bauru Group, Paraná Basin (modified from [104]).
The outcrops that yielded Itasuchidae specimens is located with the crocodile outlines. A-B and C-D are regional geological sections.
Fig 3.
Cross-section of correlation of vertical profile composites of the Bauru Group.
Showing the lithostratigraphic framework at Formation level of the Bauru Group.
Fig 4.
Cross-section of correlation of vertical profile composites of the Bauru Group.
Showing the sequence stratigraphic framework at facies association level of the Bauru Group.
Fig 5.
New stratigraphic chart of cretaceous of the Paraná Basin.
Proposition of a revised chrono-lithostratigraphy of the Bauru Group.
Table 1.
Set up of the micro CT-scan scanning conditions.
Fig 6.
Roxochampsa paulistanus comb. nov. (UFRJ-DG 501-R).
A- lateral view; B- medial view; C- detail, mesio-lingual surface view of tenth hemimandibular tooth; D- detail, lingual surface view of twelfth hemimandibular tooth; E- oclusal view; F- isolate tooth: a- lateral profile; b-lingual view; c- labial view. Each scale bar = 10 mm. Legend in text.
Fig 7.
Roxochampsa paulistanus comb. nov. (UFRJ-DG 451-R).
A- lateral view; B- medial view; C- oclusal view; D- anterior view; E- posterior view. Each scale bar = 10 mm. Legend in text.
Fig 8.
Internal structures of the fragmented hemimandible of Roxochampsa paulistanus comb. nov. UFRJ-DG 451-R from μCT-scan slices.
Boxes on top indicate planes, while below the corresponding cuts from the fossil (A) and the 3D model (B). (A): A1-3- transverse planes and coronal cuts; A4-5- median planes and sagittal cuts; A6- frontal plane and horizontal cut. (B): B1-2- transverse planes and coronal cuts; B3-frontal plane and horizontal cut; B4-5- median planes and sagittal cuts. Scale bar = 2.5 cm.
Fig 9.
Roxochampsa paulistanus comb. nov. UFRJ-DG 451-R.
The enamel and dentine of the d11 and d13 broken crowns. A- d11; B- d13. Scale bar = 1 mm.
Fig 10.
Roxochampsa paulistanus comb. nov. UFRJ-DG 451-R, d12 multicrenulate tooth features.
A- detail of the basal region, showing multicrenulated high relief enamel ridges; B- detail of apical region, showing granulated protuberances “scaly-forms”; C- detail of mid-apex region, showing overlapping projections; D- section of distal and crenulated carena. Scale bar for the tooth = 10 mm; in A, C and D scale bars = 1 mm; in B scale bar = 0.1mm.
Fig 11.
Calibrated strict consensus tree from 225 MLTs (1520 steps, CI = 0.304 and RI = 0.692).
The phylogenetic relationships (thin lines) come from the strict consensus tree calibrated with the geological ages (chronostratigraphic chart). Thick lines represents the species temporal range based on specimens occurrence. Also, colors in thick lines represent the inferred habit for studied species.
Fig 12.
Hemimandible comparisons between some mesoeucrocodylian taxa.
A- Roxochampsa paulistanus comb. nov. (UFRJ-DG 451-R), right hemimandible fragment; B- Roxochampsa paulistanus comb. nov. (UFRJ-DG 501-R), right hemimandible, lacking the anterior-most portion; C- Itasuchus jesuinoi (DGM 434-R), left hemimandible fragment mirrored; D- Itasuchus sp. (MUGEO 218-V), right hemimandible fragment; E- Pepesuchus deiseae (MCT 1788-R), left hemimandible fragment mirrored; F- Machimosaurus buffetauti (SMNS 91415) right hemimandible; G- Goniopholis simus (IPB R359), right hemimandible; H- Crocodylus niloticus (PV. 6524-R), right hemimandible; I- Caiman latirostris (DGM 156-RR), left hemimandible mirrored, J- Gavialis gangeticus (DGM 289-RR) right hemimandible. Each scale bar = 10 mm. Legend in text.
Fig 13.
Details of the lingual crown surfaces, showing multicrenulate longitudinal ridges, from Roxochampsa paulistanus comb. nov. specimens.
A- DGM 259-R; B- d12 of UFRJ-DG 451-R; C- d12 of UFRJ-DG 501-R. Each scale bar = 1 mm.