[dinosaur] Ctenochasmatid fossils from Lower Cretaceous of Atacama Desert, Chile

--0000000000000432df059bbf2eae
Content-Type: text/plain; charset="UTF-8"
Content-Transfer-Encoding: Quoted-printable

Ben [email protected]=0A=0AA new paper:=0A=0AJhonatan Alarc=C3=
=B3n-Mu=C3=B1oz, Sergio Soto-Acu=C3=B1a, Laura Codorni=C3=BA, David=0ARubil=
ar-Rogers, Michel Sallaberry & Manuel Su=C3=A1rez (2020)=0ANew ctenochasmat=
id pterosaur record for Gondwana: discovery in the Lower=0ACretaceous conti=
nental deposits of the Atacama Desert, northern Chile.=0ACretaceous Researc=
h: 104378 (advance online publication)=0Adoi: https://urldefense.proofpoint=
.com/v2/url?u=3Dhttps-3A__doi.org_10.1016_j.cretres.2020.104378&d=3DDwIFaQ&=
c=3DclK7kQUTWtAVEOVIgvi0NU5BOUHhpN0H8p7CSfnc_gI&r=3DRy_mO4IFaUmGof_Yl9MyZge=
cRCKHn5g4z1CYJgFW9SI&m=3DeT-okx9jirm1SwwpJt_VZAhZj66C6o9iCvwS9RfByeQ&s=3DDk=
82V2fm4dkQ-LFGy1B5p2Y051hur5LUfThPoVT621w&e=3D=20=0Ahttps://urldefense.proo=
fpoint.com/v2/url?u=3Dhttps-3A__www.sciencedirect.com_science_article_pii_S=
0195667119303933&d=3DDwIFaQ&c=3DclK7kQUTWtAVEOVIgvi0NU5BOUHhpN0H8p7CSfnc_gI=
&r=3DRy_mO4IFaUmGof_Yl9MyZgecRCKHn5g4z1CYJgFW9SI&m=3DeT-okx9jirm1SwwpJt_VZA=
hZj66C6o9iCvwS9RfByeQ&s=3DH-t4sx5JzRlx-51FxlL7lIC4VBa1KOiwekGtkQqnqKA&e=3D=
=20=0A=0A=0A=0A=0ANew pterosaur remains from Cerro La Isla, Quebrada Monard=
es Formation=0A(Lower Cretaceous), Northern Chile, are described. The mater=
ial comprises=0Amandibular remains preserving dental bases and two vertebra=
e of the mid=0Acervical series. The morphology and arrangement of the denta=
l bases show a=0Asimilar pattern to that observed in European and Chinese c=
tenochasmatids,=0Abut can be distinguished from those other South American =
ctenochasmatids=0Areported from Argentina and Uruguay. The new vertebrae sh=
are certain=0Acharacteristics with the mid cervical vertebrae of ctenochasm=
atids, such as=0Avery elongated centra with low neural arches, low and elon=
gated neural=0Aspines, the presence of postexapophyses and a pair of oval p=
neumatic=0Aforamina on the lateral surfaces of the centra. Although most of=
 these=0Afeatures are shared with the mid cervical vertebrae of azhdarchid=
=0Apterosaurs, the lower integration of the neural arch, which does not=0Aa=
cquire a tubular morphology in the mid-point of the vertebral centrum,=0Ato=
gether with the presence of oval pneumatic foramina, are characteristics=0A=
that allow the referral of both vertebrae to the Ctenochasmatidae. The=0Ave=
rtebral, mandibular and rostral remains from Cerro La Isla suggest the=0Apr=
esence of a previously unknown ctenochasmatid pterosaur, distinct from=0APt=
erodaustro, the only other South American taxon.=0A=0A=3D=3D=3D=3D=3D=3D=3D=
=0A=

--0000000000000432df059bbf2eae
Content-Type: text/html; charset="UTF-8"
Content-Transfer-Encoding: Quoted-printable

<div dir=3D"ltr"><br><div><br></div><div>Ben Creisler</div><div><a href=3D"=
mailto:[email protected]">[email protected]</a></div><div><br></div><di=
v>A new paper:</div><div><br></div><div>Jhonatan Alarc=C3=B3n-Mu=C3=B1oz, S=
ergio Soto-Acu=C3=B1a, Laura Codorni=C3=BA, David Rubilar-Rogers, Michel Sa=
llaberry &amp; Manuel Su=C3=A1rez (2020)<br>New ctenochasmatid pterosaur re=
cord for Gondwana: discovery in the Lower Cretaceous continental deposits o=
f the Atacama Desert, northern Chile.<br>Cretaceous Research: 104378 (advan=
ce online publication)<br>doi: <a href=3D"https://urldefense.proofpoint.com=
/v2/url?u=3Dhttps-3A__doi.org_10.1016_j.cretres.2020.104378&amp;d=3DDwMFaQ&=
amp;c=3DclK7kQUTWtAVEOVIgvi0NU5BOUHhpN0H8p7CSfnc_gI&amp;r=3DRy_mO4IFaUmGof_=
Yl9MyZgecRCKHn5g4z1CYJgFW9SI&amp;m=3DeT-okx9jirm1SwwpJt_VZAhZj66C6o9iCvwS9R=
fByeQ&amp;s=3DDk82V2fm4dkQ-LFGy1B5p2Y051hur5LUfThPoVT621w&amp;e=3D">https:/=
/doi.org/10.1016/j.cretres.2020.104378</a> <br><a href=3D"https://urldefens=
e.proofpoint.com/v2/url?u=3Dhttps-3A__www.sciencedirect.com_science_article=
_pii_S0195667119303933&amp;d=3DDwMFaQ&amp;c=3DclK7kQUTWtAVEOVIgvi0NU5BOUHhp=
N0H8p7CSfnc_gI&amp;r=3DRy_mO4IFaUmGof_Yl9MyZgecRCKHn5g4z1CYJgFW9SI&amp;m=3D=
eT-okx9jirm1SwwpJt_VZAhZj66C6o9iCvwS9RfByeQ&amp;s=3DH-t4sx5JzRlx-51FxlL7lIC=
4VBa1KOiwekGtkQqnqKA&amp;e=3D">https://www.sciencedirect.com/science/articl=
e/pii/S0195667119303933</a></div><div><br></div><div><br></div><div><br><br=
>New pterosaur remains from Cerro La Isla, Quebrada Monardes Formation (Low=
er Cretaceous), Northern Chile, are described. The material comprises mandi=
bular remains preserving dental bases and two vertebrae of the mid cervical=
 series. The morphology and arrangement of the dental bases show a similar =
pattern to that observed in European and Chinese ctenochasmatids, but can b=
e distinguished from those other South American ctenochasmatids reported fr=
om Argentina and Uruguay. The new vertebrae share certain characteristics w=
ith the mid cervical vertebrae of ctenochasmatids, such as very elongated c=
entra with low neural arches, low and elongated neural spines, the presence=
 of postexapophyses and a pair of oval pneumatic foramina on the lateral su=
rfaces of the centra. Although most of these features are shared with the m=
id cervical vertebrae of azhdarchid pterosaurs, the lower integration of th=
e neural arch, which does not acquire a tubular morphology in the mid-point=
 of the vertebral centrum, together with the presence of oval pneumatic for=
amina, are characteristics that allow the referral of both vertebrae to the=
 Ctenochasmatidae. The vertebral, mandibular and rostral remains from Cerro=
 La Isla suggest the presence of a previously unknown ctenochasmatid pteros=
aur, distinct from Pterodaustro, the only other South American taxon.</div>=
<div><br>=3D=3D=3D=3D=3D=3D=3D<br></div></div>=0A=

--0000000000000432df059bbf2eae--