Sinornithoides

Sy-no-nif-oy-deez.
Published on

Claire Morris

Marine Paleontologist

Claire Morris has dedicated her career to exploring the depths of prehistoric oceans. Her fascination with ancient marine life has led her to discover significant fossils that illuminate the evolution of early sea creatures.

Cite Feedback Print

Name

Sinornithoides ‭(‬Chinese bird form‭)‬.

Phonetic

Sy-no-nif-oy-deez.

Named By

D.‭ ‬A.‭ ‬Russell‭ & ‬Z.-M.‭ ‬Dong‭ ‬-‭ ‬1994.

Classification

Chordata,‭ ‬Reptilia,‭ ‬Dinosauria,‭ ‬Saurischia,‭ ‬Theropoda,‭ ‬Troodontidae.

Diet

Carnivore.

Species

S.‭ ‬youngi‭

Size

About‭ ‬1‭ ‬meter long,‭ ‬but holotype is of a subadult,‭ ‬a fully grown adult would likely be slightly larger.

Known locations

China‭ ‬-‭ ‬Zhonggou Formation.

Time Period

Aptian‭? ‬of the Cretaceous.

Fossil representation

At least one almost complete specimen of a subadult.

In Depth

       Sinornithoides is a genus of small troodontid dinosaur that lived in China during the early Cretaceous.‭ ‬The holotype individual of this genus,‭ ‬a subadult,‭ ‬was found in a nesting position with its head tucked under its left arm,‭ ‬very similar to how another small troodontid named Mei was found.‭ ‬This may indicate that most,‭ ‬maybe even all troodontids slept in such a manner,‭ ‬and again illustrates how close some varieties of dinosaurs were to the birds.‭ ‬As a small and fast troodontid dinosaur,‭ ‬Sinornithoides would have been a predator of small animals such as smaller lizards and mammals,‭ ‬and perhaps even larger insects.‭ ‬One point of note about Sinornithoides,‭ ‬is that the sickle claw on the second toe of the feet is proportionately quite large when compared to other troodontids.

Further Reading

-‭ ‬A nearly complete skeleton of a new troodontid dinosaur from the Early Cretaceous of the Ordos Basin,‭ ‬Inner Mongolia,‭ ‬People’s Republic of China.‭ ‬-‭ ‬Canadian Journal of Earth Sciences‭ ‬30‭(‬10-11‭)‬:2163-2173.‭ ‬-‭ ‬D.‭ ‬A.‭ ‬Russell‭ & ‬Z.-M.‭ ‬Dong‭ ‬-‭ ‬1994.

SPECIES SPOTLIGHT