Re: [dinosaur] Diadectomorphs and seymouriamorphs as amniotes from inner ear morphology
Thomas Richard Holtz <[email protected]>
| Newsgroups | gmane.science.dinosaurs.general |
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| Message-ID | <CAHQFgppiQEhAyX9-FkLsjhAFk6ztsq88dreSkdtDW80AhtsBsQ@mail.gmail.com> |
>> I was surprised, BTW, to see "non-crown amniotes" in the abstract - is there any possible distinction from "stem amniotes" (which they also use)? >No. Disagree. The standard usage of "stem-" in invertebrate paleo refers to members outside the crown group but closer to it than to the next closest crown group (so stem-arthropod, stem-mollusk, etc.). But "non-crown amniotes" is (as noted) a nonsensical term. On Fri, Oct 11, 2019 at 3:19 PM David Marjanovic <[email protected]> wrote: > > Absent better agreement on lissamphibian origins, would the amniote > total group be a terribly useful thing to have a name for? > > Perhaps not. Specifically, if the lissamphibians belong with whatever > remains of the "lepospondyls", then the seymouriamorphs are not even > crown-group tetrapods unless the new paper (which I haven't read yet) finds > something else. > > > I was surprised, BTW, to see "non-crown amniotes" in the abstract - is > there any possible distinction from "stem amniotes" (which they also use)? > > No. > -- Thomas R. Holtz, Jr. Email: [email protected] Phone: 301-405-4084 Principal Lecturer, Vertebrate Paleontology Office: Geology 4106, 8000 Regents Dr., College Park MD 20742 Dept. of Geology, University of Maryland https://urldefense.proofpoint.com/v2/url?u=http-3A__www.geol.umd.edu_-7Etholtz_&d=DwIBaQ&c=clK7kQUTWtAVEOVIgvi0NU5BOUHhpN0H8p7CSfnc_gI&r=Ry_mO4IFaUmGof_Yl9MyZgecRCKHn5g4z1CYJgFW9SI&m=Y8p8kC6H9BQYROzEj5Q9rOdQasMp65qd4FKFQMpX2XU&s=3YCrQt1ioFnWI6qXiUhG0ZY8Ou3XGU1HRE6Q0SlUDNM&e= Phone: 301-405-6965 Fax: 301-314-9661 Faculty Director, Science & Global Change Program, College Park Scholars Office: Centreville 1216, 4243 Valley Dr., College Park MD 20742 https://urldefense.proofpoint.com/v2/url?u=http-3A__www.geol.umd.edu_sgc&d=DwIBaQ&c=clK7kQUTWtAVEOVIgvi0NU5BOUHhpN0H8p7CSfnc_gI&r=Ry_mO4IFaUmGof_Yl9MyZgecRCKHn5g4z1CYJgFW9SI&m=Y8p8kC6H9BQYROzEj5Q9rOdQasMp65qd4FKFQMpX2XU&s=qViGIitabCtzpiRlY5C-r4n5NP-0L_3bgzQLmsRBZ6U&e= Fax: 301-314-9843 Mailing Address: Thomas R. Holtz, Jr. Department of Geology Building 237, Room 1117 8000 Regents Drive University of Maryland College Park, MD 20742-4211 USA