On 11/21/23 8:04 AM, erik simpson wrote:well as the basis for biogeographic models. Nevertheless, the co-occurrence of silesaurs and the oldest unequivocal dinosaurs is rare, which hampers reliable ecological inferences. Here we present the first species of silesaur from the oldest unequivocal
https://www.nature.com/articles/s41598-023-32057-x open access
Abstract
Comprising the oldest unequivocal dinosauromorphs in the fossil record, silesaurs play an important role in the Triassic radiation of dinosaurs. These reptiles provide the main source of information regarding the ancestral body plan of dinosaurs, as
Middle to Upper Triassic4,5,6,7,8, no records have been reported from Jurassic or younger strata9,10. Silesaurs are particularly interesting because of their close phylogenetic relationships with dinosaurs4,11,12, with several studies placing silesaursIntroduction
Silesaurs are part of the wide Triassic radiation of archosaurs1,2. Most silesaurs are characterized by slender limbs and a “beak-like” projection from the anterior tip of the lower jaw3. Whereas these reptiles are present in the fossil record of
Interesting. But it's amazing that material consisting entirely of the distal end of one femur and the proximal end of another manages to makeThe Pop-sci article that called it to my attention (https://www.sci.news/paleontology/amanasaurus-nesbitti-12466.html)
it into Nature. They must have really sold that story.
On 11/21/23 10:06 AM, erik simpson wrote:as well as the basis for biogeographic models. Nevertheless, the co-occurrence of silesaurs and the oldest unequivocal dinosaurs is rare, which hampers reliable ecological inferences. Here we present the first species of silesaur from the oldest
On Tuesday, November 21, 2023 at 8:25:06 AM UTC-8, John Harshman wrote:
On 11/21/23 8:04 AM, erik simpson wrote:
https://www.nature.com/articles/s41598-023-32057-x open access
Abstract
Comprising the oldest unequivocal dinosauromorphs in the fossil record, silesaurs play an important role in the Triassic radiation of dinosaurs. These reptiles provide the main source of information regarding the ancestral body plan of dinosaurs,
of Middle to Upper Triassic4,5,6,7,8, no records have been reported from Jurassic or younger strata9,10. Silesaurs are particularly interesting because of their close phylogenetic relationships with dinosaurs4,11,12, with several studies placingIntroduction
Silesaurs are part of the wide Triassic radiation of archosaurs1,2. Most silesaurs are characterized by slender limbs and a “beak-like” projection from the anterior tip of the lower jaw3. Whereas these reptiles are present in the fossil record
The "reconstruction" in the Nature article is just as odd. Presumably itInteresting. But it's amazing that material consisting entirely of theThe Pop-sci article that called it to my attention (https://www.sci.news/paleontology/amanasaurus-nesbitti-12466.html)
distal end of one femur and the proximal end of another manages to make >> it into Nature. They must have really sold that story.
even has a portrait of the little monster (obviously not derived from this fragmentary specimen).
all comes from various other silesaurids. But separate chunks of femur
from separate individuals doesn't do much. One might also be skeptical
of the tree resulting from those data.
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