![Nrken19 on Twitter: "When aDNA is sampled it is often taken from a specific area of the cranium called the pars petrosa bone, but why is that? The bone is the hardest Nrken19 on Twitter: "When aDNA is sampled it is often taken from a specific area of the cranium called the pars petrosa bone, but why is that? The bone is the hardest](https://pbs.twimg.com/media/FgKLh9wXkAgHosU.jpg)
Nrken19 on Twitter: "When aDNA is sampled it is often taken from a specific area of the cranium called the pars petrosa bone, but why is that? The bone is the hardest
![A manual of anatomy . For detailssee page 350. 54 OSTEOLOGY The petromastoid portion (pars petrosa et pars mastoidia) is the most massive division and is pyramidal in form. The petrous part{pyramis) A manual of anatomy . For detailssee page 350. 54 OSTEOLOGY The petromastoid portion (pars petrosa et pars mastoidia) is the most massive division and is pyramidal in form. The petrous part{pyramis)](https://c8.alamy.com/comp/2AXJR15/a-manual-of-anatomy-for-detailssee-page-350-54-osteology-the-petromastoid-portion-pars-petrosa-et-pars-mastoidia-is-the-most-massive-division-and-is-pyramidal-in-form-the-petrous-partpyramis-is-a-long-three-sided-pyramid-with-an-apex-a-base-threesurfaces-and-three-margins-the-apex-is-near-the-middle-line-of-thebase-of-the-cranium-at-the-body-of-the-sphenoid-the-base-is-fusedwith-the-squamous-and-tympanic-portions-the-anterior-surfaceforms-a-part-of-the-floor-of-the-middle-cranial-fossa-and-is-smooth-butirregular-it-may-show-impressions-of-the-gyri-of-the-temporal-lobe-ofthe-cere-2AXJR15.jpg)
A manual of anatomy . For detailssee page 350. 54 OSTEOLOGY The petromastoid portion (pars petrosa et pars mastoidia) is the most massive division and is pyramidal in form. The petrous part{pyramis)
![The morphology of the pars petrosa, serving as an age indicator. foetus... | Download Scientific Diagram The morphology of the pars petrosa, serving as an age indicator. foetus... | Download Scientific Diagram](https://www.researchgate.net/publication/294090549/figure/fig3/AS:328395884908545@1455307088019/The-morphology-of-the-pars-petrosa-serving-as-an-age-indicator-foetus-of-about-4-5.png)
The morphology of the pars petrosa, serving as an age indicator. foetus... | Download Scientific Diagram
![Tomographic-cephalometric evaluation of the pars petrosa of temporal bone as sexing method - ScienceDirect Tomographic-cephalometric evaluation of the pars petrosa of temporal bone as sexing method - ScienceDirect](https://ars.els-cdn.com/content/image/1-s2.0-S2665910721000050-gr1.jpg)
Tomographic-cephalometric evaluation of the pars petrosa of temporal bone as sexing method - ScienceDirect
![An atlas of human anatomy for students and physicians. Anatomy. Petrous portion Pars petrosa (pyramis) Squamous portion of the temporal Squama temporalis Sphenoidal border Margo sphenoidalis Caroticotympanic canaliculi Canaliculi caroticotympanic! Carotid An atlas of human anatomy for students and physicians. Anatomy. Petrous portion Pars petrosa (pyramis) Squamous portion of the temporal Squama temporalis Sphenoidal border Margo sphenoidalis Caroticotympanic canaliculi Canaliculi caroticotympanic! Carotid](https://c8.alamy.com/comp/RJYB6K/an-atlas-of-human-anatomy-for-students-and-physicians-anatomy-petrous-portion-pars-petrosa-pyramis-squamous-portion-of-the-temporal-squama-temporalis-sphenoidal-border-margo-sphenoidalis-caroticotympanic-canaliculi-canaliculi-caroticotympanic!-carotid-canal-canalis-caroticus!-bone-inferior-petrosal-sulcus-sulcus-petrosus-inferior-depression-for-the-petrosal-ganglion-of-the-glossopnat-yngeal-nerve-fossula-petrosa-inferior-orifice-of-tympanic-canaliculus-canal-for-tympanic-branch-of-glossopharyngeal-jac0d8onsnervegtaprtum-inf-canaliculi-tympanic!-external-orifice-of-the-aqueduct-RJYB6K.jpg)
An atlas of human anatomy for students and physicians. Anatomy. Petrous portion Pars petrosa (pyramis) Squamous portion of the temporal Squama temporalis Sphenoidal border Margo sphenoidalis Caroticotympanic canaliculi Canaliculi caroticotympanic! Carotid
![Archive image from page 57 of Die descriptive und topographische Anatomie. Die descriptive und topographische Anatomie des Menschen diedescriptiveun00heit Year: 1896 IS Knochen ilcs Schädels. tf<cb--- mü—afsm. se 21. Linkes Schläfebein, Os Archive image from page 57 of Die descriptive und topographische Anatomie. Die descriptive und topographische Anatomie des Menschen diedescriptiveun00heit Year: 1896 IS Knochen ilcs Schädels. tf<cb--- mü—afsm. se 21. Linkes Schläfebein, Os](https://c8.alamy.com/comp/W012EY/archive-image-from-page-57-of-die-descriptive-und-topographische-anatomie-die-descriptive-und-topographische-anatomie-des-menschen-diedescriptiveun00heit-year-1896-is-knochen-ilcs-schdels-tfltcb-mafsm-se-21-linkes-schlfebein-os-temporale-von-aussen-das-schlfebein-wird-in-3-theile-getheilt-in-1-den-schuppen-theil-squama-2-den-felsentheil-pars-petrosa-und-3-den-warzen-theil-pars-mastoideaj-der-schuppentheil-hat-an-der-usseren-flche-vor-und-ber-dem-usseren-gehrgang-meatus-auditorius-externus-den-durch-2-wurzeln-gebildeten-jochfortsatz-processus-tygom-W012EY.jpg)