Secodontosaurus (English Wikipedia)

Romer, A.S.; Price, L.I. (1940). "Review of the Pelycosauria". Geological Society of America Special Paper. Geological Society of America Special Papers. 28: 1–538. doi:10.1130/spe28-p1.
Reisz, R. R.; Berman, D. S.; Scott, D. (1992). "The cranial anatomy and relationships of Secodontosaurus, an unusual mammal-like reptile (Pelycosauria: Sphenacodontidae) from the early Permian of Texas". Zoological Journal of the Linnean Society. 104: 127–184. doi:10.1111/j.1096-3642.1992.tb00920.x.
Reisz, R. R.; Scott, D.; Van Bendegem, J. (1992). "Atlas-axis complex of Secodontosaurus, a sphenacodontid mammal-like reptile (Eupelycosauria: Synapsida) from the Lower Permian of Texas". Canadian Journal of Earth Sciences. 29 (3): 596–600. Bibcode:1992CaJES..29..596R. doi:10.1139/e92-051.
Fröbisch, J.; Rainer R. Schoch; Johannes Müller; Thomas Schindler; Dieter Schweiss (2011). "A new basal sphenacodontid synapsid from the Late Carboniferous of the Saar-Nahe Basin, Germany". Acta Palaeontologica Polonica. 56 (1): 113–120. doi:10.4202/app.2010.0039. S2CID 45410472.
Benson, R.J. (2012). "Interrelationships of basal synapsids: cranial and postcranial morphological partitions suggest different topologies". Journal of Systematic Palaeontology. 10 (4): 601–624. Bibcode:2012JSPal..10..601B. doi:10.1080/14772019.2011.631042. S2CID 84706899.

harvard.edu (Global: 18^th place; English: 17^th place)

Reisz, R. R.; Scott, D.; Van Bendegem, J. (1992). "Atlas-axis complex of Secodontosaurus, a sphenacodontid mammal-like reptile (Eupelycosauria: Synapsida) from the Lower Permian of Texas". Canadian Journal of Earth Sciences. 29 (3): 596–600. Bibcode:1992CaJES..29..596R. doi:10.1139/e92-051.
Benson, R.J. (2012). "Interrelationships of basal synapsids: cranial and postcranial morphological partitions suggest different topologies". Journal of Systematic Palaeontology. 10 (4): 601–624. Bibcode:2012JSPal..10..601B. doi:10.1080/14772019.2011.631042. S2CID 84706899.

Science, Houston Museum Of Natural (2007-10-26). "Secodontosaurus: The "Fox-Faced Finback"". Prehistoric CSI. Archived from the original on December 16, 2023. Retrieved 2024-02-18.

Fröbisch, J.; Rainer R. Schoch; Johannes Müller; Thomas Schindler; Dieter Schweiss (2011). "A new basal sphenacodontid synapsid from the Late Carboniferous of the Saar-Nahe Basin, Germany". Acta Palaeontologica Polonica. 56 (1): 113–120. doi:10.4202/app.2010.0039. S2CID 45410472.
Benson, R.J. (2012). "Interrelationships of basal synapsids: cranial and postcranial morphological partitions suggest different topologies". Journal of Systematic Palaeontology. 10 (4): 601–624. Bibcode:2012JSPal..10..601B. doi:10.1080/14772019.2011.631042. S2CID 84706899.

"Dispatches From South Dakota: Willie The Dimetrodon [Day 2] | BEYONDbones". blog.hmns.org. Archived from the original on October 7, 2022.
Science, Houston Museum Of Natural (2007-10-26). "Secodontosaurus: The "Fox-Faced Finback"". Prehistoric CSI. Archived from the original on December 16, 2023. Retrieved 2024-02-18.