Apatosaurinae

Apatosaurinae is a subfamily of diplodocid sauropods that existed between 157 and 150 million years ago in North America. The group includes two genera for certain, Apatosaurus and Brontosaurus, and at least five species. Atlantosaurus and Amphicoelias might also belong to this group.[1]

Apatosaurines Temporal range: Late Jurassic, 157–146.8 Ma PreꞒ Ꞓ O S D C P T J K Pg N
Skeleton of an apatosaurine (either Apatosaurus or Brontosaurus), American Museum of Natural History 460
Scientific classification
Kingdom:	Animalia
Phylum:	Chordata
Clade:	Dinosauria
Clade:	Saurischia
Suborder:	†Sauropodomorpha
Clade:	†Sauropoda
Clade:	†Eusauropoda
Clade:	†Neosauropoda
Family:	†Diplodocidae
Subfamily:	†Apatosaurinae Janensch, 1929
Genera[1]
†Amphicoelias? †Apatosaurus †Atlantosaurus? †Brontosaurus

Below is a cladogram of apatosaurinae interrelationships based on Tschopp et al., 2015.[1]

Diplodocidae	Amphicoelias altus        Diplodocinae     Apatosaurinae    Unnamed species         Apatosaurus ajax     Apatosaurus louisae         Brontosaurus excelsus       Brontosaurus yahnahpin     Brontosaurus parvus

References

1. Tschopp, E.; Mateus, O. V.; Benson, R. B. J. (2015). "A specimen-level phylogenetic analysis and taxonomic revision of Diplodocidae (Dinosauria, Sauropoda)". PeerJ. 3: e857. doi:10.7717/peerj.857. PMC 4393826. PMID 25870766.