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Spinosaur taxonomy and evolution of craniodental features: Evidence from Brazil

Fig 2

Specimen SMNS 58022, holotype of Irritator challengeri.

A, Left lateral view. B, Right lateral view. The abbreviation for the third tooth of the left maxilla follows Hendrickx et al. [58]. Additional abbreviations: ao.f, antorbital fenestra; c.c, crista cranii; e.n, external naris; m, maxilla; m.r, mandibular ramus; n, nasal; n.c, nasal sagittal crest; n.p, nasal process; o, orbit; pm, premaxilla; s, stapes.

Fig 2

doi: https://doi.org/10.1371/journal.pone.0187070.g002