an articulation surface direction of acquired three-dimensional information on the tooth T including information on a root canal R inside the tooth T two-dimensionally displayed to a prescribed surface in the articulation surface direction are displayed in a monitor 15 in association with each other....
so x-rays are used to produce radiographs (“radio” – x-radiation; “graph” – picture), images of the structures through which they pass. X-rays are used for medical evaluation because of their unique ability to pass
As you can see from my notes, I clocked the little ridges on the inside of the neural canal, but I didn’t know what to make of them. (BTW I’ve used this little feller in a bunch of talks and in my MTE paper last summer with Jessie — see Wedel & Atterholt 2023 andthis post...
Speaking of comparisons, here’s megalodon to remind everyone who’s boss. There’s no scale bar here, but the cast great white tooth is 65mm from the tip of the crown to the tip of the longer root, and the meg tooth is 155mm between the same points. Now I have a gleam in my e...
with no sign of the root resorption that would have preceded shedding of the tooth, so they were evidently going to be used for a while yet,probably a few months at least— BUT see the very useful comment from Jens Kosch below on the likely rapidity of tooth replacement inCamarasaurus....
Fast forward to the summer of 2018, by which time I was working with Jessie Atterholt on paramedullary diverticula — laying the groundwork for what would become Atterholt & Wedel (2022) — and generally getting interested in all things neural canal related, including the weird expanded neural...
There’s another side to this, which is figuring out how old someone was at the time of death based on their skeleton. Tooth eruption is good, and fusion of the epiphyseal growth plates, but both of those processes are basically done by the time people are in their mid-20s (teeth) to...
Also, all of these worn teeth still had full roots, with no sign of the root resorption that would have preceded shedding of the tooth, so they were evidently going to be used for a while yet, probably a few months at least— BUT see the very useful comment from Jens Kosch below on...
Last but not least there aredenticulate ligaments, little sideways extensions of the pia mater that anchor the spinal cord to the inside of the dura mater. I drew them in pink in the diagram, but in dissection they are shiny white or silver; ‘denticulate’ means ‘little tooth’. ...
bp, basipterygoid process; bs, basisphenoid plate; bsr, basisphenoid rostrum; ch, choana; dt, developing tooth; pt, pterygoid; pp, papillae; pmc, medial contact of the palatal processes of the premaxillae.First, I’ve updated the timeline in Friday’s post to include several more events,...