hi :) my boyfriends birthday is in a month, and i wanted to get him a spinosaurus tooth or two for his birthday, since it's his favourite dinosaur and i've read that their teeth are fairly common so they're within my budget. i'm just having some trouble finding reputable sites since i'm not really knowledgeable about this stuff.

they don't need to be particularly big or intact or have the root, since those are more expensive. i'd just like to be sure they're authentic. also i'm in the eu so preferably within the eu.

thanks!

image by Narimane Chatar

so 3d volumetrics and gdi,in combination,are widely considered the best and most accurate method to estimate the body mass of animals.

ive seen plenty done for theropod dinosaurs. but ive not seen any done for a saber cat except for maybe randomdinos smilodon.

its not like its impossible to do it for sabertooth cats. Homotherium,smilodon,megantereon, and im sure more sabrecats have complete specimens known.

arguably sabertooth cats out of all animals could especially use volumetrics because almost every method to estimate their body mass is unreliable. even long bone regressions (considered the best) are hampered by the fact the dataset only includes modern day cats,which are very different in morphology than sabretooth cats. which probably makes regressions based off modern day cats questionable for sabertooth cats(look at other cases of failed proxies in regression making)

so why havent 3d volumetrics and gdi been done for sabertooth cats? it doesnt make much sense to me

link to the notice:https://www.millon.com/actualites/un-dinosaure-aux-encheres

So I was reading the Wikipedia article on Pendraig, and I noticed the link to Syntarsus was “Syntarsus”. And the article for it is titled Coelophysis? kayentakatae. And apparently, “Syntarsus” is an invalid genus because it’s a junior synonym for a bug?

Here’s where I’m confused. I thought the whole point of junior synonyms is that they were given to already named animals, and because of the “first come first serve” rule, they’re invalid. Wouldn’t that mean that they can be reused for proper genera? So “Coelophysis? kayentakatae” should be Syntarsus kayentakatae? Or are junior synonyms locked out of being ever properly used, all because the original assigners were too stupid to check the availability?