FOSSILS SPECIMEN: EARLY SYNAPSIDS
Fossils are defined as any evidenceĀ of prehistoric life. There are two types of fossils: Body Fossils include remains of skeletal bones, shell, carapace, test and teeth. Trace Fossils are clues the organism existed such as foot prints, tracks, burrows and coprolites (fossil dung).
Sphenacodontia is a stem-based clade of derived synapsids. Basal Sphenacodontia constitute a transitional evolutionary series from early pelycosaurus to ancestral therapsids, which in turn were the ancestors of more advanced forms and finally the mammals. To see my model/toy “Pelycosaurs” click here.
Kingdom: Animalia – Phylum: Chordata – Clade: Synapsida – Informal Group: “Pelycosauria” – Family: Sphenacodontidae
(Genus: Dimetrodon)
Early Permian

Dimetrodon Scapula tip (outer)
Lower Permian
Seymour, Texas, United States

Dimetrodon Scapula tip (inner)
Lower Permian
Seymour, Texas, United States

Dimetrodon Vertebrae
Lower Permian
Seymour, Texas, United States

Dimetrodon Neural Spines
Lower Permian
Seymour, Texas, United States

Dimetrodon Neural Spines
Lower Permian
Seymour, Texas, United States

Dimetrodon Rib Head
Lower Permian
Seymour, Texas, United States

Dimetrodon Hip (3D Print)
Lower Permian
Seymour, Texas, United States
Kingdom: Animalia – Phylum: Chordata – Clade: Synapsida “Pelycosauria” – Family: Sphenacodontidae
(Genus: Edaphosaurus)
Early Permian

Edaphosaurus Vertebae
Lower Permian
Seymour, Texas, United States