[dinosaur] Tanystropheus (Archosauromorpha) revised; Sclerostropheus, new genus (free pdf)
Ben Creisler <[email protected]> Tue, 17 Dec 2019 09:20:46 -0800
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--0000000000003ab9130599e98df1 Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: Quoted-printable Ben [email protected]=0A=0AA new paper in open access:=0A=0A= =0ASclerostropheus gen. nov.=0ASclerostropheus fossai comb. nov.=0A=0ASteph= an N.F. Spiekman and Torsten M. Scheyer (2019)=0AA taxonomic revision of th= e genus Tanystropheus (Archosauromorpha,=0ATanystropheidae).=0APalaeontolog= ia Electronica 22.3.80: 1=E2=80=9346.=0Adoi: https://urldefense.proofpoint.= com/v2/url?u=3Dhttps-3A__doi.org_10.26879_1038&d=3DDwIFaQ&c=3DclK7kQUTWtAVE= OVIgvi0NU5BOUHhpN0H8p7CSfnc_gI&r=3DRy_mO4IFaUmGof_Yl9MyZgecRCKHn5g4z1CYJgFW= 9SI&m=3D8ulOdandbXbSlV14aDU5WeStD_JiQOgK_MW_t3C4P0w&s=3DOfkN76FhpHX_kQPNFYa= k1bx2bhw6pklBw2g--QQAJI4&e=3D=20=0Ahttps://urldefense.proofpoint.com/v2/url= ?u=3Dhttps-3A__palaeo-2Delectronica.org_content_2019_2870-2Drevision-2Dof-2= Dtanystropheus&d=3DDwIFaQ&c=3DclK7kQUTWtAVEOVIgvi0NU5BOUHhpN0H8p7CSfnc_gI&r= =3DRy_mO4IFaUmGof_Yl9MyZgecRCKHn5g4z1CYJgFW9SI&m=3D8ulOdandbXbSlV14aDU5WeSt= D_JiQOgK_MW_t3C4P0w&s=3Dco5XYPEh_DErSCOaad0zc9Ijx1DlxixMtR9fEOxEPWo&e=3D=20= =0A=0AFree pdf:=0Ahttps://urldefense.proofpoint.com/v2/url?u=3Dhttps-3A__pa= laeo-2Delectronica.org_content_pdfs_1038.pdf&d=3DDwIFaQ&c=3DclK7kQUTWtAVEOV= Igvi0NU5BOUHhpN0H8p7CSfnc_gI&r=3DRy_mO4IFaUmGof_Yl9MyZgecRCKHn5g4z1CYJgFW9S= I&m=3D8ulOdandbXbSlV14aDU5WeStD_JiQOgK_MW_t3C4P0w&s=3DNoMbnLQHlGFq1PdPxJR3m= h7sHxPW6yAH0SP5f_vVzIE&e=3D=20=0A=0ATanystropheus represents one of the mos= t characteristic genera of Triassic=0Areptiles and is typified by easily re= cognizable, hyperelongate cervical=0Avertebrae. First described in 1852, is= olated cervical vertebrae and other=0Aremains have been referred to the gen= us and various species have been=0Aerected and rejected based on this mater= ial. This has resulted in a=0Acomplicated and convoluted taxonomic history = of the genus and confusion as=0Ato the validity of species and the referral= of specimens. With the=0Aexception of the well-represented T. longobardicu= s, the five other species=0Aof Tanystropheus are known from isolated elemen= ts or a single, partial=0Aspecimen. Here, we provide a complete overview of= the taxonomic history and=0Aa revision of the genus based on first hand ob= servations of the type=0Amaterial of most of the species. From this, we con= clude that T. conspicuus=0Aand T. haasi should be considered nomina dubia a= nd that T. meridensis=0Aconstitutes a junior synonym to T. longobardicus. F= urthermore, T.=0Alongobardicus can be subdivided into two discrete morphoty= pes that might=0Arepresent separate species. However, a more detailed study= is required to=0Atest this hypothesis. Finally, T. fossai is considered di= stinctly different=0Afrom the other Tanystropheus taxa and is therefore ref= erred to a separate=0Agenus, Sclerostropheus.=0A=0A=3D=3D=3D=3D=3D=3D=3D=3D= =3D=3D=3D=3D=3D=3D=0A=0A=0A[Type species T. conspicuus is made a nomen dubi= um but genus name=0ATanystropheus is considered valid... Hmmm....=0A=0A=0A"= Nevertheless it remains the type species as the first named species of the= =0Agenus, and it is diagnostic on the genus level based on the characterist= ic=0Acervical vertebrae of the type material that are unique to the genus= =0ATanystropheus." ]=0A= --0000000000003ab9130599e98df1 Content-Type: text/html; charset="UTF-8" Content-Transfer-Encoding: Quoted-printable <div dir=3D"ltr"><br><div>Ben Creisler</div><div><a href=3D"mailto:bcreisle= [email protected]">[email protected]</a></div><div><br></div><div>A new paper i= n open access:</div><div><br></div><div><br></div><div>Sclerostropheus gen.= nov.<br>Sclerostropheus fossai comb. nov.<br><br>Stephan N.F. Spiekman and= Torsten M. Scheyer (2019)<br>A taxonomic revision of the genus Tanystrophe= us (Archosauromorpha, Tanystropheidae).<br>Palaeontologia Electronica 22.3.= 80: 1=E2=80=9346. <br>doi: <a href=3D"https://urldefense.proofpoint.com/v2/= url?u=3Dhttps-3A__doi.org_10.26879_1038&d=3DDwMFaQ&c=3DclK7kQUTWtAV= EOVIgvi0NU5BOUHhpN0H8p7CSfnc_gI&r=3DRy_mO4IFaUmGof_Yl9MyZgecRCKHn5g4z1C= YJgFW9SI&m=3D8ulOdandbXbSlV14aDU5WeStD_JiQOgK_MW_t3C4P0w&s=3DOfkN76= FhpHX_kQPNFYak1bx2bhw6pklBw2g--QQAJI4&e=3D">https://doi.org/10.26879/10= 38</a><br><a href=3D"https://urldefense.proofpoint.com/v2/url?u=3Dhttps-3A_= _palaeo-2Delectronica.org_content_2019_2870-2Drevision-2Dof-2Dtanystropheus= &d=3DDwMFaQ&c=3DclK7kQUTWtAVEOVIgvi0NU5BOUHhpN0H8p7CSfnc_gI&r= =3DRy_mO4IFaUmGof_Yl9MyZgecRCKHn5g4z1CYJgFW9SI&m=3D8ulOdandbXbSlV14aDU5= WeStD_JiQOgK_MW_t3C4P0w&s=3Dco5XYPEh_DErSCOaad0zc9Ijx1DlxixMtR9fEOxEPWo= &e=3D">https://palaeo-electronica.org/content/2019/2870-revision-of-tan= ystropheus</a></div><div><br>Free pdf:<br><a href=3D"https://urldefense.pro= ofpoint.com/v2/url?u=3Dhttps-3A__palaeo-2Delectronica.org_content_pdfs_1038= .pdf&d=3DDwMFaQ&c=3DclK7kQUTWtAVEOVIgvi0NU5BOUHhpN0H8p7CSfnc_gI&= ;r=3DRy_mO4IFaUmGof_Yl9MyZgecRCKHn5g4z1CYJgFW9SI&m=3D8ulOdandbXbSlV14aD= U5WeStD_JiQOgK_MW_t3C4P0w&s=3DNoMbnLQHlGFq1PdPxJR3mh7sHxPW6yAH0SP5f_vVz= IE&e=3D">https://palaeo-electronica.org/content/pdfs/1038.pdf</a><br><b= r>Tanystropheus represents one of the most characteristic genera of Triassi= c reptiles and is typified by easily recognizable, hyperelongate cervical v= ertebrae. First described in 1852, isolated cervical vertebrae and other re= mains have been referred to the genus and various species have been erected= and rejected based on this material. This has resulted in a complicated an= d convoluted taxonomic history of the genus and confusion as to the validit= y of species and the referral of specimens. With the exception of the well-= represented T. longobardicus, the five other species of Tanystropheus are k= nown from isolated elements or a single, partial specimen. Here, we provide= a complete overview of the taxonomic history and a revision of the genus b= ased on first hand observations of the type material of most of the species= . From this, we conclude that T. conspicuus and T. haasi should be consider= ed nomina dubia and that T. meridensis constitutes a junior synonym to T. l= ongobardicus. Furthermore, T. longobardicus can be subdivided into two disc= rete morphotypes that might represent separate species. However, a more det= ailed study is required to test this hypothesis. Finally, T. fossai is cons= idered distinctly different from the other Tanystropheus taxa and is theref= ore referred to a separate genus, Sclerostropheus.</div><div><br>=3D=3D=3D= =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D<br></div><div><br></div><div><br></div><d= iv>[Type species T. conspicuus is made a nomen dubium but genus name Tanyst= ropheus is considered valid... Hmmm....=C2=A0</div><div><br></div><div><br>= </div>"Nevertheless it remains the type species as the first named spe= cies of the genus, and it is diagnostic on the genus level based on the cha= racteristic cervical vertebrae of the type material that are unique to the = genus Tanystropheus."=C2=A0 ]</div>=0A= --0000000000003ab9130599e98df1--