A field guide to mesozoic birds and other winged dinosaurs

• “Euronychodon” portucalensis - known only from teeth, probably from a troodontid.
• Itemirus medullaris - Known initially from an isolated braincase similar to that of Velociraptor.
Additional skeletons have yet to be described but are reported to approach
Utahraptor in size (Sues & Averianov, 2004).
• Ornithodesmus cluniculus - known from a synsacrum.
• “Paronychodon” caperatus - known only from teeth, probably troodontid.
• Paronychodon lacustris- known only from teeth, probably troodontid.
• Pectinodon bakkeri - known only from teeth which are indistinguishable from Troodon
formosus but much later in time.
• Pyroraptor olympius - known from teeth and fragmentary foot, wing bones, and vertebrae.
• Richardoestesia gilmorei - teeth, possibly from a species of microraptorians.
• Richardoestesia isosceles - teeth, possibly from a species of microraptorians.
• “Saurornithoides” asiamericanus - Known from teeth that differ from Troodon formosus
in having flatter sides and larger serrations with narrow bases.
• Saurornitholestes robustus - known from a skull fragment which cannot be relaibly
distinguished from other ornithodesmid remains.
• Tochisaurus nemegtensis - known from metatarsals, probably troodontid.
• Urbacodon itemirensis - teeth and skeletal fragments. Probably troodontid.
• Zapsalis abradens - teeth, possibly from small or juvenile dromaeosaurines.
Enantiornitheans
• Abavornis bonaparti - known from a partial coracoid.
• Alexornis antecedens - known from a partial wing and other fragments.
• Avisaurus gloriae - known from a tarsometatarsus.
• Catenoleimus anachoretus - known from a partial coracoid.
• “Cathayornis” caudatus - dubious species probably synonymous with a contemporary.
• Enantiornis leali - known only from wing bones, it is probably synonymous with Lectavis
bretincola, known only from leg bones.
• Dalingheornis liweii - known from a juvenile specimen and probably synonymous
with a contemporary. The supposed long, unfused tail is a juvenile characteristic (as
in Zhongornis) and the reported zygodactyl foot may an artifact of preservation.
• Elsornis keni - known from wing bones, the proportions indicate these were the only
known flightless enantiornitheans.
• Explorornis nessovi - known from a partial coracoid.
• Explorornis walkeri - known from a partial coracoid.
• Flexomornis howei - known from a partial wing and other fragments.
• Gurilynia nessovi - known from a partial humerus and coracoid.
• “Ichthyornis” minusculus - known from a single verteba.
• Incolornis martini - known from a partial coracoid.
• Incolornis silvae - known from a partial coracoid.
• Kizylkumavis cretacea - known from a partial humerus.
• Lenesornis maltshevskyi - known from a partial sacrum.
• Liaoxiornis delicatus - known from hatchling specimens, probably synonymous with
a contemporary.
• Martinavis cruzyensis - known from an isolated humerus.
• Martinavis minor - known from a partial humerus.
• Martinavis saltariensis - known from a humerus, probably synonymous with another
Lecho formation species.
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