Doc­tor re­veals struc­ture of teeth from Dimetrodon, the world’s first apex preda­tor

The Drumheller Mail - - CLASSIFIEDS - Sub­mit­ted The Drumheller Mail

The March 3 ses­sion of the 2016 Royal Tyrrell Mu­seum’s Speaker Se­ries is a pre­sen­ta­tion by Dr. Kirstin Brink from the Univer­sity of Bri­tish Columbia en­ti­tled “Un­cov­er­ing the Hid­den Den­tal Di­ver­sity of the First Apex Preda­tors Canada’s bo­re­alis.”

Al­though of­ten in­cor­rectly iden­ti­fied as a di­nosaur, the iconic sail-backed Dimetrodon was ac­tu­ally an an­cient an­ces­tor of to­day’s mam­mals. Dat­ing back to the Per­mian Pe­riod, 295-272 mil­lion years ago, Dimetrodon to Iden­tify Dimetrodon Dr. Kirstin Brink from the Univer­sity of Bri­tish Columbia is de­liv­er­ing a pre­sen­ta­tion called “Un­cov­er­ing the Hid­den Den­tal Di­ver­sity of the First Apex Preda­tors to Iden­tify Canada’s Dimetrodon bo­re­alis” at this week’s Speaker Se­ries. was one of the first top preda­tors on land and had sev­eral char­ac­ter­is­tics that made it an ef­fi­cient preda­tor. Fore­most among th­ese was a mouth full of large, ser­rated teeth re­quired for sub­du­ing and con­sum­ing prey.

This talk will pro­vide a close study of the teeth us­ing both his­tol­ogy (cut­ting open the teeth and us­ing a mi­cro­scope to iden­tify tis­sues and struc­ture) and CT scans (to ex­am­ine the shape of the tooth roots within the jaws). This re­search re­vealed many dif­fer­ences in tooth shape be­tween dif­fer­ent species of Dimetrodon, and how tooth shape changed over mil­lions of years of evo­lu­tion­ary time. The shape of the teeth of Dimetrodon was also key in the re-iden­ti­fi­ca­tion of an enig­matic fos­sil col­lected in 1845 as Canada’s own species of Dimetrodon, Dimetrodon bo­re­alis.

The Royal Tyrrell Mu­seum’s Speaker Se­ries talks are free and open to the pub­lic. The se­ries is held ev­ery Thurs­day un­til April 28, 2016 at 11:00 a.m. in the Mu­seum au­di­to­rium. Past pre­sen­ta­tions are also avail­able on the Mu­seum’s YouTube chan­nel: youtube.com/user/ Roy­alTyrrel­lMu­seum. For more in­for­ma­tion, visit tyrrell­mu­seum. com.

sub­mit­ted

Newspapers in English

Newspapers from Canada

© PressReader. All rights reserved.