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- Publications
- Influence
Giant boid snake from the Palaeocene neotropics reveals hotter past equatorial temperatures
- J. Head, J. Bloch, +5 authors C. A. Jaramillo
- Biology, Medicine
- Nature
- 5 February 2009
The largest extant snakes live in the tropics of South America and southeast Asia where high temperatures facilitate the evolution of large body sizes among air-breathing animals whose body… Expand
Predation upon Hatchling Dinosaurs by a New Snake from the Late Cretaceous of India
- J. A. Wilson, D. Mohabey, S. Peters, J. Head
- Biology, Medicine
- PLoS biology
- 1 March 2010
A new snake from Upper Cretaceous rocks in India is found with hatchling sauropod dinosaurs, demonstrating that large, gape-limited snakes were probably capable of taking in moderate-sized vertebrate… Expand
A New Species of the Snake Madtsoia from the Upper Cretaceous of India and Its Paleobiogeographic Implications
- D. Mohabey, J. Head, J. A. Wilson
- Geology
- 1 May 2011
ABSTRACT
We report the discovery of a new species of the snake Madtsoia from1 infratrappean horizons of Late Cretaceous age in Pisdura, central India. Recovered vertebrae are large (1.83 cm long;… Expand
Evolution of the snake body form reveals homoplasy in amniote Hox gene function
- J. Head, P. D. Polly
- Biology, Medicine
- Nature
- 2 April 2015
Hox genes regulate regionalization of the axial skeleton in vertebrates, and changes in their expression have been proposed to be a fundamental mechanism driving the evolution of new body forms. The… Expand
Fossil calibration dates for molecular phylogenetic analysis of snakes 2: Caenophidia, Colubroidea, Elapoidea, Colubridae
- J. Head, Kristin Mahlow, J. Müller
- Biology
- 16 June 2016
Caenophidia, the snake clade that includes the highest species richness, morphological diversity, and ecological breadth within Serpentes, has been extensively studied with respect to molecular… Expand
Fossil Crocodilians from the High Guajira Peninsula of Colombia: Neogene Faunal Change in Northernmost South America
- Jorge W. Moreno-Bernal, J. Head, C. Jaramillo
- Geology
- Journal of Vertebrate Paleontology
- 3 March 2016
ABSTRACT
The La Guajira Peninsula, Colombia, has a continuous vertebrate fossil record that includes both the late early-early middle Miocene and the Pliocene. Crocodilians from the early to early… Expand
Fossil snakes from the Neogene of Venezuela (Falcón state)
- J. Head, M. Sánchez-Villagra, O. Aguilera
- Geology
- 1 January 2006
Synopsis The first fossil snakes from Venezuela are described from three different Formations: Colombophis cf. C. portai and Boinae indet. from the Middle Miocene Socorro Formation, Boinae indet.… Expand
Palaeontology: Turtle origins out to sea
Various aspects of turtle evolution are the subject of vigorous debate among vertebrate palaeontologists. A newly described fossil species, the oldest yet discovered, adds grist to the mill.
Oldest placental mammal from sub-Saharan Africa: Eocene microbat from Tanzania - Evidence for early evolution of sophisticated echolocation
- G. Gunnell, B. Jacobs, +7 authors G. Storch
- Geology
- 1 December 2003
A partial skeleton of a new fossil microbat, Tanzanycteris mannardi, is the oldest placental mammal found in sub-Saharan Africa. It came from early Lutetian (46 Ma) lake sediments in north-central… Expand
A new Late Cretaceous iguanomorph from North America and the origin of New World Pleurodonta (Squamata, Iguania)
- David G DeMar, Jack L. Conrad, J. Head, D. Varricchio, G. P. Wilson
- Geology, Medicine
- Proceedings of the Royal Society B: Biological…
- 25 January 2017
Iguanomorpha (stem + crown Iguania) is a diverse squamate clade with members that predominate many modern American lizard ecosystems. However, the temporal and palaeobiogeographic origins of its… Expand