|
Thanks for updating me on that. As usual, more fossils would be helpful to clear this up. The fact that we have true-blue Maastrichtian galloanserans but not the paleognaths and neoavians that must have been present should be a continuing impetus for further
discoveries.
Thomas Yazbeck
From: dinosaur-l-request@mymaillists.usc.edu <dinosaur-l-request@mymaillists.usc.edu> on behalf of David Äernà <david.cerny1@gmail.com>
Sent: Wednesday, April 28, 2021 8:29 PM To: dinosaur-l@usc.edu <dinosaur-l@usc.edu> Subject: Re: [dinosaur] What is the earliest known bird Those divergence time estimates are all obsolete, though. Modern node-dating studies (e.g., Jarvis et al. 2014; Claramunt & Cracraft 2015; Cracraft et al. 2015; Prum et al. 2015; Kimball et al. 2019; Kuhl et al. 2020) generally agree that the
neoavian radiation took place mostly and possibly entirely after the K/Pg boundary (so no Cretaceous gruiforms or charadriiforms), and date the pan-anseriform/pan-galliform split to no earlier than the Maastrichtian. In fact, instead of the implausibly old
age estimates you are alluding to, you now occasionally get the opposite problem where some of the divergences end up being younger than the fossil record allows. For example, the Prum et al. tree places the pan-anseriform/pan-galliform divergence close to
the Paleocene/Eocene boundary, long after Teviornis, Asteriornis, or even Conflicto. This has been referred to as the "zombie lineage" problem by Springer et al. (2017).
Refs:
Claramunt S, Cracraft J. 2015. A new time tree reveals Earth historyâs imprint on the evolution of modern birds.
Sci. Adv. 1(11):e1501005.
Cracraft J, Houde P, Ho SYW, Mindell DP, Fjeldsà J, Lindow B, Edwards SV, Rahbek C, Mirarab S, Warnow T, Gilbert MTP, Zhang G, Braun EL, Jarvis ED. 2015. Response to Comment on âWhole-genome analyses resolve early branches in the tree of life of modern
birdsâ. Science 349(6255):1460b.
Jarvis ED, Mirarab S, Aberer AJ, Li B, Houde P, Li C, Ho SYW, Faircloth BC, Nabholz B, Howard JT, Suh A, Weber CC, da Fonseca RR, Li J, Zhang F, Li H, Zhou L, Narula N, Liu L, Ganapathy G, Boussau B, Bayzid MS, Zavidovych V, Subramanian S, GabaldÃn T,
Capella-GutiÃrrez S, Huerta-Cepas J, Rekepalli B, Munch K, Schierup M, Lindow B, Warren WC, Ray D, Green RE, Bruford MW, Zhan X, Dixon A, Li S, Li N, Huang Y, Derryberry EP, Bertelsen MF, Sheldon FH, Brumfield RT, Mello CV, Lovell PV, Wirthlin M, Schneider
MPC, Prosdocimi F, Samaniego JA, Velazquez AMV, Alfaro-NÃÃez A, Campos PF, Petersen B, Sicheritz-Ponten T, Pas A, Bailey T, Scofield P, Bunce M, Lambert DM, Zhou Q, Perelman P, Driskell AC, Shapiro B, Xiong Z, Zeng Y, Liu S, Li Z, Liu B, Wu K, Xiao J, Yinqi
X, Zheng Q, Zhang Y, Yang H, Wang J, Smeds L, Rheindt FE, Braun M, Fjeldsà J, Orlando L, Barker FK, JÃnsson KA, Johnson W, Koepfli K-P, OâBrien S, Haussler D, Ryder OA, Rahbek C, Willerslev E, Graves GR, Glenn TC, McCormack J, Burt D, Ellegren H, AlstrÃm P,
Edwards SV, Stamatakis A, Mindell DP, Cracraft J, Braun EL, Warnow T, Jun W, Gilbert MTP, Zhang G. (2014).Whole-genome analyses resolve early branches in the tree of life of modern birds.
Science 346(6215):1320â1331
Kimball RT, Oliveros CH, Wang N, White ND, Barker FK, Field DJ, Ksepka DT, Chesser RT, Moyle RG, Braun MJ, Brumfield RT, Faircloth BC, Smith BT, Braun EL. 2019. A phylogenomic supertree of birds.
Diversity 11(7):109.
Kuhl H, Frankl-Vilches C, Bakker A, Mayr G, Nikolaus G, Boerno ST, Klages S, Timmermann B, Gahr M. 2020. An unbiased molecular approach using 3âUTRs resolves the avian family-level tree of life.
Mol. Biol. Evol. 38(1):108â127.
Prum RO, Berv JS, Dornburg A, Field DJ, Townsend JP, Lemmon EM, Lemmon AR. 2015. A comprehensive phylogeny of birds (Aves) using targeted next-generation DNA sequencing.
Nature 526(7574):569â573.
Springer MS, Emerling CA, Meredith RW, JaneÄka JE, Eizirik E, Murphy WJ. 2017. Waking the undead: Implications of a soft explosive model for the timing of placental mammal diversification.
Mol. Phylogenet. Evol. 106:86â102.
El miÃ, 28 de abr. de 2021 a la(s) 18:38, Yazbeck, Thomas (yazbeckt@msu.edu) escribiÃ:
David ÄernÃ
|