Jinguofortisidae

Jinguofortisidae is an extinct family of early avialans known from the Early Cretaceous, found in northern China.

Jinguofortisids
Temporal range: Early Cretaceous, 135–113 Ma
Type specimen of Jinguofortis perplexus
Scientific classification
Kingdom: Animalia
Phylum: Chordata
Clade: Dinosauria
Clade: Saurischia
Clade: Theropoda
Clade: Pygostylia
Family: †Jinguofortisidae
Wang et al., 2018
Genera

Description

Jinguofortisidae is distinguished from other non-ornithothoracine birds 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.[1]

Phylogeny

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.[1]

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References
  1. Wang, Min; Stidham, Thomas A.; Zhou, Zhonghe (2018). "A new clade of basal Early Cretaceous pygostylian birds and developmental plasticity of the avian shoulder girdle". Proceedings of the National Academy of Sciences. 115 (42): 10708–10713. doi:10.1073/pnas.1812176115. PMC 6196491. PMID 30249638.
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