all ornithischians, all the time

elespermatozoidemesozoico:

Edmontosaurus skeletons in the AMNH.
And also the Charles R. Knight painting, made at a time when it was thought that this was a Trachodon. They later renamed it Anatosaurus, them Anatotitan and know is know that is just a species of the Edmontosaurus.
Photos by me

Esqueletos de Edmontosaurus en el AMNH.
Con ellos el cuadro de Charles R. Knight, quién lo hizo en un tiempo en que estos animales se llamaban Trachodon. Luego se los llamó Anatosaurus, después Anatotitan y ahora se sabe que no es más que una especie de Edmontosaurus.
Yo tomé las fotos.

alphynix:

Kulindadromeus zabaikalicus, the first known fluffy ornithischian dinosaur. Only officially announced last week, this little 1.5m long (~5ft) Jurassic critter is an incredibly significant find. Until now all known examples of feathered dinosaurs have been members of the theropod branch, but Kulindadromeus is a basal neornithischian, much more closely related to hadrosaurs, ceratopsians and pachycephalosaurs.
Two other ornithischians, Tianyulong and Psittacosaurus, were previously known to have sported quill-like bristles, but this new find is the first example of actual filamentous “dinofuzz” in the group. The fossils of Kulindadromeus preserve three different types of feathery integument — hair-like filaments on the body, downy tufts on the upper limbs, and strange “ribbon-like” feathers on its shins — as well as scaly skin on the tail and lower limbs.
The idea that fuzzy ‘protofeather’-like structures might be ancestral to all dinosaurs (or maybe even deeper in the archosauria) is starting to look increasingly likely…

alphynix:

Kulindadromeus zabaikalicus, the first known fluffy ornithischian dinosaur. Only officially announced last week, this little 1.5m long (~5ft) Jurassic critter is an incredibly significant find. Until now all known examples of feathered dinosaurs have been members of the theropod branch, but Kulindadromeus is a basal neornithischian, much more closely related to hadrosaurs, ceratopsians and pachycephalosaurs.

Two other ornithischians, Tianyulong and Psittacosaurus, were previously known to have sported quill-like bristles, but this new find is the first example of actual filamentous “dinofuzz” in the group. The fossils of Kulindadromeus preserve three different types of feathery integument — hair-like filaments on the body, downy tufts on the upper limbs, and strange “ribbon-like” feathers on its shins — as well as scaly skin on the tail and lower limbs.

The idea that fuzzy ‘protofeather’-like structures might be ancestral to all dinosaurs (or maybe even deeper in the archosauria) is starting to look increasingly likely…

A Jurassic ornithischian dinosaur from Siberia with both feathers and scales »

tyrannosaurslair:

Abstract:

Middle Jurassic to Early Cretaceous deposits from northeastern China have yielded varied theropod dinosaurs bearing feathers. Filamentous integumentary structures have also been described in ornithischian dinosaurs, but whether these filaments can be regarded as part of the evolutionary lineage toward feathers remains controversial. Here we describe a new basal neornithischian dinosaur from the Jurassic of Siberia with small scales around the distal hindlimb, larger imbricated scales around the tail, monofilaments around the head and the thorax, and more complex featherlike structures around the humerus, the femur, and the tibia. The discovery of these branched integumentary structures outside theropods suggests that featherlike structures coexisted with scales and were potentially widespread among the entire dinosaur clade; feathers may thus have been present in the earliest dinosaurs.

Pay-walled, but a link to pictures

rhamphotheca:

Siberian Discovery Suggests Almost All Dinosaurs Were Feathered
Jurassic fossils may mean that feathers were all in the family.
by Dan Vergano
Almost all dinosaurs were probably covered in feathers, Siberian fossils of a tufted, two-legged running dinosaur dating from roughly 160 million years ago suggest.
Over the past two decades, discoveries in China have produced at least five species of feathered dinosaurs. But they all belonged to the theropod group of “raptor” dinosaurs, ancestors of modern birds.
Now in a discovery reported by an international team in the journal Science, the new dinosaur species, Kulindadromeus zabaikalicus, suggests that feathers were all in the family. That’s because the newly unearthed 4.5-ft-long (1.5 m) two-legged runner was an “ornithischian” beaked dinosaur, belonging to a group ancestrally distinct from past theropod discoveries…
(read more: National Geographic)
illustration by Andrey Atuchin

rhamphotheca:

Siberian Discovery Suggests Almost All Dinosaurs Were Feathered

Jurassic fossils may mean that feathers were all in the family.

by Dan Vergano

Almost all dinosaurs were probably covered in feathers, Siberian fossils of a tufted, two-legged running dinosaur dating from roughly 160 million years ago suggest.

Over the past two decades, discoveries in China have produced at least five species of feathered dinosaurs. But they all belonged to the theropod group of “raptor” dinosaurs, ancestors of modern birds.

Now in a discovery reported by an international team in the journal Science, the new dinosaur species, Kulindadromeus zabaikalicus, suggests that feathers were all in the family. That’s because the newly unearthed 4.5-ft-long (1.5 m) two-legged runner was an “ornithischian” beaked dinosaur, belonging to a group ancestrally distinct from past theropod discoveries…

(read more: National Geographic)

illustration by Andrey Atuchin