Re: [dinosaur] Theropod high tooth replacement rate evolution (free pdf)
Ben Creisler <[email protected]> Mon, 30 Dec 2019 13:43:10 -0800
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--0000000000008ccc4c059af2bb88 Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: Quoted-printable Michael D. D=E2=80=99Emic, Patrick M. O=E2=80=99Connor, Thomas R. Pascucci,= Joanna N.=0AGavras, Elizabeth Mardakhayava & Eric K. Lund (2019)=0ACorrect= ion: Evolution of high tooth replacement rates in theropod=0Adinosaurs.=0AP= LoS ONE 14(12): e0226897=0Adoi: https://urldefense.proofpoint.com/v2/url?u= =3Dhttps-3A__doi.org_10.1371_journal.pone.0226897&d=3DDwIFaQ&c=3DclK7kQUTWt= AVEOVIgvi0NU5BOUHhpN0H8p7CSfnc_gI&r=3DRy_mO4IFaUmGof_Yl9MyZgecRCKHn5g4z1CYJ= gFW9SI&m=3DtonRkUNO2InfePf-FvMBvuiBJUk0PGhNafsN3n5o_RI&s=3DXX-1IYRlhnuWmxGM= aQ5g_Qi-JDB1LaOBWHAxNYsZx1o&e=3D=20=0Ahttps://urldefense.proofpoint.com/v2/= url?u=3Dhttps-3A__journals.plos.org_plosone_article-3Fid-3D10.1371_journal.= pone.0226897&d=3DDwIFaQ&c=3DclK7kQUTWtAVEOVIgvi0NU5BOUHhpN0H8p7CSfnc_gI&r= =3DRy_mO4IFaUmGof_Yl9MyZgecRCKHn5g4z1CYJgFW9SI&m=3DtonRkUNO2InfePf-FvMBvuiB= JUk0PGhNafsN3n5o_RI&s=3D_e7JlMSXszeJRiEy8EuBz_JNaR-WFqAVYzd8ts0FMvs&e=3D=20= =0A=0A=0A(Corrected files)=0A=0A=0AOn Wed, Nov 27, 2019 at 10:46 AM Ben Cre= isler <[email protected]> wrote:=0A=0A>=0A> Ben Creisler=0A> bcreisler@gm= ail.com=0A>=0A> A new paper in open access:=0A>=0A>=0A> Michael D. D=E2=80= =99Emic, Patrick M. O=E2=80=99Connor, Thomas R. Pascucci, Joanna N.=0A> Gav= ras, Elizabeth Mardakhayava & Eric K. Lund (2019)=0A> Evolution of high too= th replacement rates in theropod dinosaurs.=0A> PLoS ONE 14(11): e0224734.= =0A> doi: https://urldefense.proofpoint.com/v2/url?u=3Dhttps-3A__doi.org_10= .1371_journal.pone.0224734&d=3DDwIFaQ&c=3DclK7kQUTWtAVEOVIgvi0NU5BOUHhpN0H8= p7CSfnc_gI&r=3DRy_mO4IFaUmGof_Yl9MyZgecRCKHn5g4z1CYJgFW9SI&m=3DtonRkUNO2Inf= ePf-FvMBvuiBJUk0PGhNafsN3n5o_RI&s=3DyG-pr5fj0SZPsPPgfW-CYqrkJVg8CyrDroX1Ajt= Sols&e=3D=20=0A> https://urldefense.proofpoint.com/v2/url?u=3Dhttps-3A__jou= rnals.plos.org_plosone_article-3Fid-3D10.1371_journal.pone.0224734&d=3DDwIF= aQ&c=3DclK7kQUTWtAVEOVIgvi0NU5BOUHhpN0H8p7CSfnc_gI&r=3DRy_mO4IFaUmGof_Yl9My= ZgecRCKHn5g4z1CYJgFW9SI&m=3DtonRkUNO2InfePf-FvMBvuiBJUk0PGhNafsN3n5o_RI&s= =3DzS24AfD-gtkBGau_uhMQp5l-Ad61yBgufCzCxU2FY3M&e=3D=20=0A>=0A> Free pdf:=0A= >=0A> https://urldefense.proofpoint.com/v2/url?u=3Dhttps-3A__journals.plos.= org_plosone_article_file-3Fid-3D10.1371_journal.pone.0224734-26type-3Dprint= able&d=3DDwIFaQ&c=3DclK7kQUTWtAVEOVIgvi0NU5BOUHhpN0H8p7CSfnc_gI&r=3DRy_mO4I= FaUmGof_Yl9MyZgecRCKHn5g4z1CYJgFW9SI&m=3DtonRkUNO2InfePf-FvMBvuiBJUk0PGhNaf= sN3n5o_RI&s=3DrMtb1GyBjd6yCyu2jgtyrKMIz_M35W2DJC7HFSEP-hc&e=3D=20=0A>=0A> T= ooth replacement rate is an important contributor to feeding ecology for=0A= > polyphyodont animals. Dinosaurs exhibit a wide range of tooth replacement= =0A> rates, mirroring their diverse craniofacial specializations, but littl= e is=0A> known about broad-scale allometric or evolutionary patterns within= the=0A> group. In the current broad but sparse dinosaurian sample, only th= ree=0A> non-avian theropod tooth replacement rates have been estimated. We= =0A> estimated tooth formation and replacement rates in three additional=0A= > non-avian theropod dinosaurs, the derived latest Cretaceous abelisaurid= =0A> Majungasaurus and the more generalized Late Jurassic Allosaurus and=0A= > Ceratosaurus. We created the largest dental histological and CT dataset f= or=0A> any theropod dinosaur, sectioning and scanning over a dozen toothed= =0A> elements of Majungasaurus and several additional elements from the oth= er=0A> two genera. Using this large sample, we created models of tooth form= ation=0A> time that allow for theropod replacement rates to be estimated=0A= > non-destructively. In contrast to previous results for theropods, we foun= d=0A> high tooth replacement rates in all three genera, with Allosaurus and= =0A> Ceratosaurus rates of ~100 days and 56 days for Majungasaurus. The lat= ter=0A> rate is on par with those of derived herbivorous dinosaurs includin= g some=0A> neosauropods, hadrosaurids, and ceratopsians. This elevated rate= may be a=0A> response to high rates of tooth wear in Majungasaurus. Within= Dinosauria,=0A> there is no relationship between body mass and tooth repla= cement rate and=0A> no trends in replacement rate over time. Rather, tooth = replacement rate is=0A> clade-specific, with elevated rates in abelisaurids= and diplodocoids and=0A> lower rates in coelurosaurs.=0A>=0A> =3D=3D=0A>= =0A> News:=0A>=0A> Flesh-ripping dinosaurs replaced their teeth multiple ti= mes a year=0A>=0A>=0A> https://urldefense.proofpoint.com/v2/url?u=3Dhttps-3= A__www.smithsonianmag.com_science-2Dnature_flesh-2Dripping-2Ddinosaurs-2Dre= placed-2Dtheir-2Dteeth-2Dmultiple-2Dtimes-2Dyear-2D180973661_&d=3DDwIFaQ&c= =3DclK7kQUTWtAVEOVIgvi0NU5BOUHhpN0H8p7CSfnc_gI&r=3DRy_mO4IFaUmGof_Yl9MyZgec= RCKHn5g4z1CYJgFW9SI&m=3DtonRkUNO2InfePf-FvMBvuiBJUk0PGhNafsN3n5o_RI&s=3D_se= rou_aS0DUFOSs5T6uZdkK661rJPvGc28j_DS6HaI&e=3D=20=0A>=0A>=0A= --0000000000008ccc4c059af2bb88 Content-Type: text/html; charset="UTF-8" Content-Transfer-Encoding: Quoted-printable <div dir=3D"ltr">Michael D. D=E2=80=99Emic, Patrick M. O=E2=80=99Connor, Th= omas R. Pascucci, Joanna N. Gavras, Elizabeth Mardakhayava & Eric K. Lu= nd (2019)<br>Correction: Evolution of high tooth replacement rates in thero= pod dinosaurs. <br>PLoS ONE 14(12): e0226897<br>doi: <a href=3D"https://url= defense.proofpoint.com/v2/url?u=3Dhttps-3A__doi.org_10.1371_journal.pone.02= 26897&d=3DDwMFaQ&c=3DclK7kQUTWtAVEOVIgvi0NU5BOUHhpN0H8p7CSfnc_gI&am= p;r=3DRy_mO4IFaUmGof_Yl9MyZgecRCKHn5g4z1CYJgFW9SI&m=3DtonRkUNO2InfePf-F= vMBvuiBJUk0PGhNafsN3n5o_RI&s=3DXX-1IYRlhnuWmxGMaQ5g_Qi-JDB1LaOBWHAxNYsZ= x1o&e=3D">https://doi.org/10.1371/journal.pone.0226897</a><br><a href= =3D"https://urldefense.proofpoint.com/v2/url?u=3Dhttps-3A__journals.plos.or= g_plosone_article-3Fid-3D10.1371_journal.pone.0226897&d=3DDwMFaQ&c= =3DclK7kQUTWtAVEOVIgvi0NU5BOUHhpN0H8p7CSfnc_gI&r=3DRy_mO4IFaUmGof_Yl9My= ZgecRCKHn5g4z1CYJgFW9SI&m=3DtonRkUNO2InfePf-FvMBvuiBJUk0PGhNafsN3n5o_RI= &s=3D_e7JlMSXszeJRiEy8EuBz_JNaR-WFqAVYzd8ts0FMvs&e=3D">https://jour= nals.plos.org/plosone/article?id=3D10.1371/journal.pone.0226897</a><div><br= ></div><div><br>(Corrected files)<br><br></div></div><br><div class=3D"gmai= l_quote"><div dir=3D"ltr" class=3D"gmail_attr">On Wed, Nov 27, 2019 at 10:4= 6 AM Ben Creisler <<a href=3D"mailto:[email protected]">bcreisler@gmai= l.com</a>> wrote:<br></div><blockquote class=3D"gmail_quote" style=3D"ma= rgin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:= 1ex"><div dir=3D"ltr"><div><br></div>Ben Creisler<div><a href=3D"mailto:bcr= [email protected]" target=3D"_blank">[email protected]</a></div><div><br><= /div><div>A new paper in open access:</div><div><br><div><br></div><div>Mic= hael D. D=E2=80=99Emic, Patrick M. O=E2=80=99Connor, Thomas R. Pascucci, Jo= anna N. Gavras, Elizabeth Mardakhayava & Eric K. Lund (2019)<br>Evoluti= on of high tooth replacement rates in theropod dinosaurs.<br>PLoS ONE 14(11= ): e0224734.<br>doi: <a href=3D"https://urldefense.proofpoint.com/v2/url?u= =3Dhttps-3A__doi.org_10.1371_journal.pone.0224734&d=3DDwMFaQ&c=3Dcl= K7kQUTWtAVEOVIgvi0NU5BOUHhpN0H8p7CSfnc_gI&r=3DRy_mO4IFaUmGof_Yl9MyZgecR= CKHn5g4z1CYJgFW9SI&m=3DtonRkUNO2InfePf-FvMBvuiBJUk0PGhNafsN3n5o_RI&= s=3DyG-pr5fj0SZPsPPgfW-CYqrkJVg8CyrDroX1AjtSols&e=3D" target=3D"_blank"= >https://doi.org/10.1371/journal.pone.0224734</a><br><a href=3D"https://url= defense.proofpoint.com/v2/url?u=3Dhttps-3A__journals.plos.org_plosone_artic= le-3Fid-3D10.1371_journal.pone.0224734&d=3DDwMFaQ&c=3DclK7kQUTWtAVE= OVIgvi0NU5BOUHhpN0H8p7CSfnc_gI&r=3DRy_mO4IFaUmGof_Yl9MyZgecRCKHn5g4z1CY= JgFW9SI&m=3DtonRkUNO2InfePf-FvMBvuiBJUk0PGhNafsN3n5o_RI&s=3DzS24AfD= -gtkBGau_uhMQp5l-Ad61yBgufCzCxU2FY3M&e=3D" target=3D"_blank">https://jo= urnals.plos.org/plosone/article?id=3D10.1371/journal.pone.0224734</a><br><b= r>Free pdf:<br><a href=3D"https://urldefense.proofpoint.com/v2/url?u=3Dhttp= s-3A__journals.plos.org_plosone_article_file-3Fid-3D10.1371_journal.pone.02= 24734-26type-3Dprintable&d=3DDwMFaQ&c=3DclK7kQUTWtAVEOVIgvi0NU5BOUH= hpN0H8p7CSfnc_gI&r=3DRy_mO4IFaUmGof_Yl9MyZgecRCKHn5g4z1CYJgFW9SI&m= =3DtonRkUNO2InfePf-FvMBvuiBJUk0PGhNafsN3n5o_RI&s=3DrMtb1GyBjd6yCyu2jgty= rKMIz_M35W2DJC7HFSEP-hc&e=3D" target=3D"_blank">https://journals.plos.o= rg/plosone/article/file?id=3D10.1371/journal.pone.0224734&type=3Dprinta= ble</a><br><br>Tooth replacement rate is an important contributor to feedin= g ecology for polyphyodont animals. Dinosaurs exhibit a wide range of tooth= replacement rates, mirroring their diverse craniofacial specializations, b= ut little is known about broad-scale allometric or evolutionary patterns wi= thin the group. In the current broad but sparse dinosaurian sample, only th= ree non-avian theropod tooth replacement rates have been estimated. We esti= mated tooth formation and replacement rates in three additional non-avian t= heropod dinosaurs, the derived latest Cretaceous abelisaurid Majungasaurus = and the more generalized Late Jurassic Allosaurus and Ceratosaurus. We crea= ted the largest dental histological and CT dataset for any theropod dinosau= r, sectioning and scanning over a dozen toothed elements of Majungasaurus a= nd several additional elements from the other two genera. Using this large = sample, we created models of tooth formation time that allow for theropod r= eplacement rates to be estimated non-destructively. In contrast to previous= results for theropods, we found high tooth replacement rates in all three = genera, with Allosaurus and Ceratosaurus rates of ~100 days and 56 days for= Majungasaurus. The latter rate is on par with those of derived herbivorous= dinosaurs including some neosauropods, hadrosaurids, and ceratopsians. Thi= s elevated rate may be a response to high rates of tooth wear in Majungasau= rus. Within Dinosauria, there is no relationship between body mass and toot= h replacement rate and no trends in replacement rate over time. Rather, too= th replacement rate is clade-specific, with elevated rates in abelisaurids = and diplodocoids and lower rates in coelurosaurs.</div><div><br></div><div>= =3D=3D</div><div><br></div><div>News:</div><div><br></div><div>Flesh-rippin= g dinosaurs replaced their teeth multiple times a year</div><div><br><a hre= f=3D"https://urldefense.proofpoint.com/v2/url?u=3Dhttps-3A__www.smithsonian= mag.com_science-2Dnature_flesh-2Dripping-2Ddinosaurs-2Dreplaced-2Dtheir-2Dt= eeth-2Dmultiple-2Dtimes-2Dyear-2D180973661_&d=3DDwMFaQ&c=3DclK7kQUT= WtAVEOVIgvi0NU5BOUHhpN0H8p7CSfnc_gI&r=3DRy_mO4IFaUmGof_Yl9MyZgecRCKHn5g= 4z1CYJgFW9SI&m=3DtonRkUNO2InfePf-FvMBvuiBJUk0PGhNafsN3n5o_RI&s=3D_s= erou_aS0DUFOSs5T6uZdkK661rJPvGc28j_DS6HaI&e=3D" target=3D"_blank">https= ://www.smithsonianmag.com/science-nature/flesh-ripping-dinosaurs-replaced-t= heir-teeth-multiple-times-year-180973661/</a><br><br></div></div></div>=0A<= /blockquote></div>=0A= --0000000000008ccc4c059af2bb88--