Baryonychinae

Baryonychines Temporal range: Early Cretaceous, 139.8–112 Ma PreꞒ Ꞓ O S D C P T J K Pg N Possible Santonian record
Skeletal diagram of genera Suchomimus and Baryonyx
Scientific classification
Domain:	Eukaryota
Kingdom:	Animalia
Phylum:	Chordata
Clade:	Dinosauria
Clade:	Saurischia
Clade:	Theropoda
Family:	†Spinosauridae
Subfamily:	†Baryonychinae Charig & Milner, 1986
Type species
†Baryonyx walkeri Charig & Milner, 1986
Subgroups
†Baryonyx †Cristatusaurus? †Protathlitis †Riojavenatrix †Suchosaurus †Ceratosuchopsini †Ceratosuchops †Riparovenator †Suchomimus

Baryonychinae is an extinct clade or subfamily of spinosaurids from the Early Cretaceous (Valanginian-Albian) of Britain, Portugal, and Niger. The clade was named by Charig & Milner in 1986 and defined by Sereno et al. in 1998 and Holtz et al. in 2004 as all taxa more closely related to Baryonyx walkeri than to Spinosaurus aegyptiacus.^[1]

Baryonychines were large, bipedal predators with elongated, crocodile-like skulls and lower jaw tips fanning out into rosettes bearing conical, often unserrated, teeth, and a distinct premaxillary notch. They possessed robust forelimbs supporting three-fingered hands with an enlarged first digit claw, to which the subfamily name indirectly refers. Members of this group, unlike the more derived Spinosaurinae, sported only low sails or none at all.