The latest accumulation away from numerous folks of predominantly one to taxon categorizes new area due to the fact an effective monodominant bonebed (Eberth ainsi que al
New Chinle Creation at the PEFO has become better-old from the large-precision You–Pb zircon decades and magnetostratigraphy, appearing that the whole development here was Norian-Rhaetian for the age (Kent mais aussi al., 2018 , 2019 ; Ramezani et al., 2011 ; Rasmussen et al., 2020 ). Roentgen. callenderi happens in the newest best Bluish Mesa Representative due to center Petrified Tree Member in the PEFO, which have a numerical a long time out of
No specimens display one signs of scavenging behavior
218.5–210 Ma (middle-later Norian; Rasmussen ainsi que al., 2020 ). There was certain uncertainty in the age of the reduced area of your Sonsela User depending on the ages model selected (Rasmussen mais aussi al., 2020 ) however, this doesn’t change the age of the initial otherwise past events out-of Roentgen. callenderi from the PEFO.
A huge selection of components of Roentgen. callenderi was basically collected of PFV 297, ranging from damaged isolated bones to help you partially articulated skeletons. , 2007 ). The fresh specimens had been all of the retrieved from one horizon during the a greenish-gray mudstone (“blue web sites” from Loughney et al., 2011 ) that is right beside a channel facies of your Painted Desert Sandstone 3 (Parker mais aussi al., 2005 ), hence probably portray levee dumps regarding proximal part of the floodplain (T.Read More »The latest accumulation away from numerous folks of predominantly one to taxon categorizes new area due to the fact an effective monodominant bonebed (Eberth ainsi que al