MiniAssignment8_skullCOMPLETED

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Anatomy

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Apr 3, 2024

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Anatomy of the Skull Read pages 338-340 to learn about the skull and then examine the figures of various dinosaur skulls below and answer the questions. Skull of the sauropod Jobaria tiguidensis (based on MNN TIG 3-5) in (A) left lateral and (B) dorsal views. Abbreviations: ac, acromion; acn, acromial notch; al, alveolus; altr, alveolar trough; amf, anterior maxillary foramen; antfe, antorbital fenestra; antfo, antorbital fossa; apl, articulation for the palatine; apm, articulation for the premaxilla; bl, blade; bo, basioccipital; d, dentary; ee, enamel edge; f, frontal; fo, foramen; l, lacrimal; m, maxilla; mc, Meckel’s canal; n, nasal; nf, narial fossa; p, parietal; pdpr, posterodorsal process of the dentary; pm, premaxilla; po, postorbital; popr, paroccipital process; prf, prefrontal; pvpr, posteroventral process of the dentary; q, quadrate; qj, quadratojugal; rf, replacement foramen; ru, rugosity; sf, subnarial foramen; so, supraoccipital; sq, squamosal; sym, symphysis; tr, trough for replacement crown; vc, vascular canal; and 1 to 34, tooth positions. (Sereno et al., 1999 – Science)
Diplodocus skull in lateral view (a) and cranium in ventral view (b). (Sauropod) From Florides and Christodoulides, 2022.
Figure 1: Holotype specimen of Acrotholus audeti . Surface scan image captures of TMP 2008.045.0001 in (a) dorsal, (b) ventral, (c) anterior, (d) posterior and (e) left lateral views. aso, anterior supraorbital; exo, exoccipital; f, frontal; itf, infratemporal fenestra; j, jugal; l, lacrimal; mep, median extension of the parietal; mx, maxilla; n, nasal; o, orbit; p, parietal; pmx, premaxilla; po, postorbital; prf, prefrontal; pso, posterior supraorbital; q, quadrate; qj, quadratojugal; sq, squamosal; ss aso, sutural surface for the anterior supraorbital; ss n, sutural surface for the nasal; ss po, sutural surface for the postorbital; ss prf, sutural surface for the prefrontal; ss pso, sutural surface for the posterior supraorbital; ss sq, sutural surface for the squamosal; stf, supratemporal fenestra. Scale bar equals 2 cm in a–e, and 5 cm for the inset skull diagram. (Evans et al., 2013). (Marginacephalian)
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