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28
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ShareScore release 0.7.1
Dataset results
28 results for “Macraucheniidae”
FIG. 15 in Exceptional Skull Of Huayqueriana (Mammalia, Litopterna, Macraucheniidae) From The Late Miocene Of Argentina: Anatomy, Systematics, And Paleobiological Implications
FIG. 15. Posterior portion of skull of Huayqueriana cf. H. cristata IANIGLA-PV 29, in ventral view. Abbreviations: eam, external acoustic meatus; Ec, ectotympanic; fo, foramen ovale; gf, glenoid fossa; hf, hypoglossal foramen; Hy, hyoid (tympanohyal + stylohyal); m, mastoid process of petrosal; oc, occipital condyle; on, odontoid notch; pap, paracondylar process of exoccipital; pf, piriform fenestra; pgf, postglenoid foramen; pgp, postglenoid process; Pt, pterygoid; smf, stylomastoid foramen. Letter x identifies canal X for nerve of pterygoid canal and vascular structures (see text). Faintly visible on the specimen's left side is the large sulcus running between the piriform fenestra and canal X.
FIG. 11 in Exceptional Skull Of Huayqueriana (Mammalia, Litopterna, Macraucheniidae) From The Late Miocene Of Argentina: Anatomy, Systematics, And Paleobiological Implications
FIG. 11. Virtual parasagittal section through skull of Huayqueriana cf. H. cristata IANIGLA-PV 29. Abbreviations: crh, position of cerebral hemispheres (cerebral cavity); Ec, ectotympanic; fs, frontal sinus; M, molar; mnv, meatus nasi ventralis; Mx, maxilla; oc, occipital condyle; P, premolar; pafs, parietal extension of frontal sinus; pap, paracondylar process of exoccipital; Pe, petrosal; Pmx, premaxilla; Pt, pterygoid; ptc, posttemporal canal; sofs, supraoccipital extension of frontal sinus; sphs, sphenoidal sinus; t, turbinate fragments in caudal portion of nasal cavity; tncav, true nasal cavity.
FIG. 4 in Exceptional Skull Of Huayqueriana (Mammalia, Litopterna, Macraucheniidae) From The Late Miocene Of Argentina: Anatomy, Systematics, And Paleobiological Implications
FIG. 4. Skull of Huayqueriana cf. H. cristata IANIGLA-PV 29 in A, right lateral, B, dorsal, and C, ventral views, with measurements (see table 2).
FIG. 14 in Exceptional Skull Of Huayqueriana (Mammalia, Litopterna, Macraucheniidae) From The Late Miocene Of Argentina: Anatomy, Systematics, And Paleobiological Implications
FIG. 14. Detail of orbit of Huayqueriana cf. H. cristata IANIGLA-PV 29. Abbreviations: etf, ethmoidal foramen; lacf, lacrimal foramen; ocr, orbital crest; opf, optic foramen; otc, orbitotemporal canal; sof, sphenoorbital fissure; spalf, sphenopalatine foramen. Arrow points rostrally.
FIG. 10 in Exceptional Skull Of Huayqueriana (Mammalia, Litopterna, Macraucheniidae) From The Late Miocene Of Argentina: Anatomy, Systematics, And Paleobiological Implications
FIG. 10. Virtual parasagittal section through choana of skull of Huayqueriana cf. H. cristata IANIGLA-PV 29. Light gray areas within skull represent unremoved matrix. Caudally-situated vacuity between nasal aperture and nasopharynx is here denoted as "true" nasal cavity (tncav), as it would have acted as the most direct air passageway in life. Primitive nasal cavity (mnv, meatus nasi ventralis) persists as a diverticulum, lacking an external aperture at front of rostrum. Note substantial thickness of rostralmost portions of premaxilla/maxilla at front of long, comparatively gracile rostrum. Other abbreviations: chl, cochlea; crh, position of cerebral hemispheres; cerebral cavity; Ec, ectotympanic; fs, frontal sinus; mnv, meatus nasi ventralis; Mx, maxilla; ns?, possible distorted portion of nasal septum; pafs, parietal extension of frontal sinus; plf, palatine fissure; Pmx, premaxilla; sphs, sphenoidal sinus; t, turbinate fragments in caudal portion of nasal cavity; tncav, true nasal cavity.
FIG. 13. A–E in Exceptional Skull Of Huayqueriana (Mammalia, Litopterna, Macraucheniidae) From The Late Miocene Of Argentina: Anatomy, Systematics, And Paleobiological Implications
FIG. 13. A–E, Virtual coronal sections of skull of Huayqueriana cf. H. cristata IANIGLA-PV 29. Abbreviations: a, aditus to frontal sinus; crh, position of cerebral hemispheres; fdv, foramen for frontal diploëic vein; fo, foramen ovale; fs, frontal sinus; J, jugal; na, nasal aperture; ob, position of olfactory bulb; otc, orbitotemporal canal; pl, position of piriform lobe; pop, postorbital process of frontal; Psph, presphenoid; Pt, pterygoid; sf, supraorbital foramen with perforating canal; sof, sphenoorbital fissure; Sq, squamosal (zygomatic process); sphs, sphenoidal sinus; t, turbinals. Letter x, identifies canal X for nerve of pterygoid canal and vascular structures (see text).
FIG. 17. A–E in Exceptional Skull Of Huayqueriana (Mammalia, Litopterna, Macraucheniidae) From The Late Miocene Of Argentina: Anatomy, Systematics, And Paleobiological Implications
FIG. 17. A–E, Virtual subhorizontal and subcoronal sections of skull of Huayqueriana cf. H. cristata IANI- GLA-PV 29. Abbreviations: J, jugal; pafs, parietal extension of frontal sinus; pgf, postglenoid foramen; pl, position of piriform lobe; ptc, posttemporal canal; rf, foramina for rami temporales; sfs, septum sinuum frontalium; sofs, supraoccipital extension of frontal sinus; sphs, sphenoidal sinus; Sq, squamosal (zygomatic process); tvs, transverse sinus canal; ve, position of vermis. Letter x identifies canal X for nerve of pterygoid canal and vascular structures (see text).
FIG. 26. A in Exceptional Skull Of Huayqueriana (Mammalia, Litopterna, Macraucheniidae) From The Late Miocene Of Argentina: Anatomy, Systematics, And Paleobiological Implications
FIG. 26. A, Strict consensus of 27 most parsimonious trees (length, 70; CI, 0.643; RI, 0.786); B, strict consensus of 3 most parsimonious trees (length, 61; CI, 0.738; RI, 0.863), restricted to taxa with 50% or more of total characters scorable; C, strict consensus of 3 most parsimonious trees (length, 55; CI, 0.818; RI, 0.915), restricted to taxa with 75% or more characters scorable. Bootstrap GC values are given at nodes.
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