| Jinguofortisids Temporal range: Early Cretaceous, | |
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| Type specimen of Jinguofortis perplexus | |
Scientific classification  | |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Class: | Reptilia |
| Clade: | Dinosauria |
| Clade: | Saurischia |
| Clade: | Theropoda |
| Clade: | Avialae |
| Clade: | Pygostylia |
| Family: | † Jinguofortisidae Wang et al., 2018 |
| Genera | |
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Jinguofortisidae is an extinct family of early pygostylian dinosaurs known from the Early Cretaceous. They were found in northern China.
The Jinguofortisidae are distinguished from other non-ornithothoracine avialans by the following features: the scapula and coracoid fused into a scapulocoracoid; a boomeranged-shaped furcula without a hypocleidium; proximal margin of humerus concave centrally; deltopectoral crest large and not perforated; minor metacarpal markedly bowed caudally; alular digit terminating at the level of the distal end of major metacarpal; and proximal phalanx of the major digit longer than the intermediate phalanx. [2]
Wang et al. (2018) erected Jinguofortisidae after finding Chongmingia (previously considered Avebrevicauda incertae sedis by Wang et al. 2016) to be sister to their new taxon Jinguofortis. [2]
In 2023, a third jinguofortisid was described by Li et al. They recovered their new taxon, Cratonavis , as the sister taxon to Chongmingia. The results of their phylogenetic analyses are shown in the cladogram below: [1]
| Avialae |
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