New information on Brasilodon and Brasilitherium (Cynodontia, Probainognathia) from the Late Triassic, southern Brazil

By J. Bonaparte. 2005

102 citations recorded by the source corpus.

– New discoveries of articulated skulls and lower jaws of Brasilodon and Brasilitherium from the Late Triassic of Brazil provide additional information on these small cynodonts, allowing us to establish the family Brasilodontidae nov. The basicranium, lateral wall of the braincase, primary and secondary palates and the quadrate of Brasilitherium are described, as well as the basicranium, primary palate and lower jaw of Brasilodon. Brasilitherium exhibits more derived characters than Brasilodon in the periotic, the promontorium, and the articular process of the dentary. Brasilodon is more derived in the lower dentition, the mode of tooth replacement, and the vascular features in the “stapedial recess”. Both genera have interpterygoid vacuities that are considered here as possibly derived or reversed characters of the mammalian primary palate. The new phylogenetic analysis presented here corroborates the position of both genera as sister-group of mammals as previously proposed.

Subfields: Nature and Landscape Conservation, Paleontology

View Paper: https://www.semanticscholar.org/paper/9aab84469c005cd61fe3b9f4535dfe519e969f79

How researchers see this paper

The researchers whose trusted networks rank it highest, strongest advocate first. Every researcher gets a different order.

In Nature and Landscape Conservation

1. K. Vance‐Borland
2. R. Pressey
3. C. Klein
4. Natalie Ban
5. Jun Liu
6. P. Olsen
7. Atte Moilanen

In Paleontology

1. Jun Liu
2. P. Olsen

Citations in the corpus

• The Phylogenetic Relationships of Eucynodontia (Amniota: Synapsida) (2010, methodology): “As stated by Bonaparte et al. (2005), mammalian characters emerged in a mosaic fashion across different non-mammalian cynodont clades appearing alongside persistent primitive features.”
• Developmental Patterns in Mesozoic Evolution of Mammal Ears (2012, background): “F or p er so na l u se o nl y. Major homoplasies Quadratojugal regained Incus stapedial process lost Cynodonts Mammaliaforms: dentary condyle, squamosal glenoid Meckel‘s cartilage Morganucodon skull Morganucodonf Hadrocodium and crown mammals Sinoconodone Incus (quadrate) Malleus (articular) Ectotym”
• A Late Triassic dinosauriform from south Brazil and the origin of the ornithischian predentary bone (2007, unknown): “2003 , 2005 ), the tritheletondid Riograndia (Bonaparte et al.”