Integumentary Structures in Kulindadromeus zabaikalicus, a Basal Neornithischian Dinosaur from the Jurassic of Siberia

  title={Integumentary Structures in Kulindadromeus zabaikalicus, a Basal Neornithischian Dinosaur from the Jurassic of Siberia},
  author={Pascal Godefroit and Sofia M. Sinitsa and Aude Cincotta and Maria E. McNamara and Svetlana A. Reshetova and Danielle Dhouailly},
Recent studies on the origin of feathers have been stimulated by discoveries of feather-like structures in various nonavian theropod dinosaurs from Late Jurassic to Early Cretaceous deposits in northeastern China. Filamentous integumentary structures are also known in two ornithischian dinosaurs from China, but whether these filaments form part of the evolutionary lineage of feathers has been controversial. Kulindadromeus zabaikalicus, a basal neornithischian dinosaur from the Jurassic of… 

Epidermal complexity in the theropod dinosaur Juravenator from the Upper Jurassic of Germany

Epidermal scales among modern reptiles are morphologically diverse and serve a variety of functions ranging from moisture balance to chemoreception. Despite being predominantly squamous‐skinned

Foot scales in the Early Cretaceous bird Gansus from China provide evidences on the evolution of avian scales

The morphological details of two types of scales preserved in IVPP V15077, a referred specimen of the Early Cretaceous bird Gansus, are characterized, which indicates that all four types present in modern birds have appeared in the EarlyCretaceous.

Morphology and distribution of scales, dermal ossifications, and other non‐feather integumentary structures in non‐avialan theropod dinosaurs

The morphology and distribution of non-feathered integumentary structures in non-avialan theropods, covering squamous skin and naked skin as well as dermal ossifications are reviewed.

Chemical preservation of tail feathers from Anchiornis huxleyi, a theropod dinosaur from the Tiaojishan Formation (Upper Jurassic, China)

A panel of geochemical techniques is used here to investigate the taphonomy of fossil feathers preserved in association with the skeleton of the Jurassic theropod Anchiornis huxleyi. Extant feathers

Estimating the distribution of carotenoid coloration in skin and integumentary structures of birds and extinct dinosaurs

Support is found that expression of carotenoid‐consistent color in nonplumage integument structures might evolve in a correlated manner and feathers are rarely the only region of expression.



Exceptionally preserved juvenile megalosauroid theropod dinosaur with filamentous integument from the Late Jurassic of Germany

Sciurumimus albersdoerferi represents the phylogenetically most basal theropod that preserves direct evidence for feathers and helps close the gap between feathers reported in coelurosaurian theropods and filaments in ornithischians, further supporting the homology of these structures.

The rise of feathered dinosaurs: Kulindadromeus zabaikalicus, the oldest dinosaur with ‘feather-like’ structures

The first dating of the Kulinda locality is presented, combining U-Pb analyses on detrital zircons and monazites from sedimentary rocks of volcaniclastic origin and palynological observations, which provide evidence of a Bathonian age for Kulindadromeus, the oldest known dinosaur with “feather-like” structures discovered so far.

A bizarre Jurassic maniraptoran from China with elongate ribbon-like feathers

This finding shows that a member of the avialan lineage experimented with integumentary ornamentation as early as the Middle to Late Jurassic, and provides further evidence relating to this aspect of the transition from non-avian theropods to birds.

An Early Cretaceous heterodontosaurid dinosaur with filamentous integumentary structures

Tianyulong extends the geographical distribution of heterodontosaurids to Asia and confirms the clade’s previously questionable temporal range extension into the Early Cretaceous period, and represents the first confirmed report, to the authors' knowledge, of filamentous integumentary structures in an ornithischian dinosaur.

A new carnivorous dinosaur from the Late Jurassic Solnhofen archipelago

A cladistic analysis indicates that the new theropod dinosaur described from the Late Jurassic period of Schamhaupten in southern Germany is closer to maniraptorans than to tyrannosauroids, grouping it with taxa often considered to be compsognathids.

Palaeontology: Scales, feathers and dinosaurs

A previously unknown theropod is described which, like Compsognathus and most specimens of Archaeopteryx, is from the Late Jurassic of Solnhofen, southern Germany but shows absolutely no sign of feathery integument, suggesting that the evolution history of feathers in dinosaurs is a more complex tale than was thought.

A Jurassic ornithischian dinosaur from Siberia with both feathers and scales

A seemingly feathery nontheropod dinosaur from the Jurassic of Siberia shows that feathers were not unique to the ancestors of birds and may even have been quite widespread, and feathers may thus have been present in the earliest dinosaurs.

Bristle-like integumentary structures at the tail of the horned dinosaur Psittacosaurus

The discovery of bristle-like structures in Psittacosaurus is of great evolutionary significance since it shows that the integumentary covering of at least some dinosaurs was much more complex than has ever been previously imagined.

A pre-Archaeopteryx troodontid theropod from China with long feathers on the metatarsus

The extensive feathering of this specimen, particularly the attachment of long pennaceous feathers to the pes, sheds new light on the early evolution of feathers and demonstrates the complex distribution of skeletal and integumentary features close to the dinosaur–bird transition.

Response to Lingham-Soliar: dinosaur protofeathers: pushing back the origin of feathers into the Middle Triassic?

  • G. Mayr
  • Environmental Science
    Journal of Ornithology
  • 2009
There remains the possibility that the ‘‘bristles’’ of Psittacosaurus can be shown to be homologous to the filamentous structures of theropod dinosaurs, similar structures may have already been present in a more comprehensive clade including ornithischian dinosaurs.