EOSUCHUS (CROCODYLIA, GAVIALOIDEA) FROM THE LOWER EOCENE OF THE ISLE OF SHEPPEY, ENGLAND (2006)
A partial skull from the early Eocene London Clay of the Isle of Sheppey, England, is referable to the gavialoid clade Eosuchus, otherwise known from the late Paleocene of continental Europe and...
Eosuchus minor (Marsh, 1870) is based on skeletal fragments from the Late Paleocene or Early Eocene of New Jersey, but more complete material from the Late Paleocene of New Jersey, Maryland, and...
ALLIGATORINE PHYLOGENY AND THE STATUS OF ALLOGNATHOSUCHUS MOOK, 1921 (2004)
Whether the extinct crocodylians given the name Allognathosuchus represent a monophyletic assemblage remains controversial, and some have argued that Wannaganosuchus brachymanus Erickson, 1982 is a...
Eothoracosaurus mississippiensis, gen. et sp. nov., is based on a skull and partial skeleton from the Upper Cretaceous (early Maastrichtian) Ripley Formation of Mississippi. Less complete material...
CALIBRATION AGE AND QUARTET DIVERGENCE DATE ESTIMATION (2004)
The date of a single divergence point—between living alligators and crocodiles—was estimated with quartet dating using calibrations of widely divergent ages. For five mitochondrial sequence...
PATTERNS OF CALIBRATION AGE SENSITIVITY WITH QUARTET DATING METHODS (2004)
Because more than one calibration is used, quartet dating (a molecular dating method) is thought to reduce error that might arise from a single calibration point. Within crocodylians, there is a...
A DYROSAURID CROCODYLIFORM BRAINCASE FROM MALI (2002)
CHRISTOPHER A. BROCHU, MAMADOU L. BOUARÉ, FAMORY SISSOKO, ERIC M. ROBERTS, MAUREEN A. O'LEARY
A well-preserved crocodyliform specimen from the Maastrichtian or Paleocene of Mali preserves the braincase and posterior dermatocranium. It is referred to Dyrosauridae on the basis of several...
PROGRESS AND FUTURE DIRECTIONS IN ARCHOSAUR PHYLOGENETICS (2001)
The basic structure of archosaurian phylogeny is understood to include two primary crown-group lineages—one leading to living crocodiles and including a broad diversity of Triassic animals (e.g.,...
Crocodylian Snouts in Space and Time: Phylogenetic Approaches Toward Adaptive Radiation1 (2001)
Recent phylogenetic analyses of fossil and living crocodylians allow us to compare the taxonomic, geographic, and temporal distributions of morphological features, such as snout shapes. A few basic...
Global lability, regional resolution, and majority-rule consensus bias (2001)
Colin D. Sumrall, Christopher A. Brochu, John W. Merck Jr.
Evolutionary interpretation of paleontological patterns requires a hypothesis of phylogeny, but our phylogenetic hypotheses may not perfectly mirror organismal phylogeny. Tree summary methods less...
Modern phylogenetics in paleontology: comments on Vermeij 1999 (2001)
Christopher A. Brochu, Harold N. Bryant, Jessica M. Theodor, Maureen A. O'Leary, Jonathan M. Adrain, Colin D. Sumrall
Crocodylian Snouts in Space and Time: Phylogenetic Approaches Toward Adaptive Radiation (2001)
Recent phylogenetic analyses of fossil and living crocodylians allow us to compare the taxonomic, geographic, and temporal distributions of morphological features, such as snout shapes. A few basic...
Phylogenetic Context for the Origin of Feathers1 (2000)
Stuart S. Sumida, Christopher A. Brochu
A number of hypotheses have been suggested for the origin of birds and feathers. Although distributions of functional complexes have frequently been used to test phylogenetic hypotheses, analysis of...
Maximum parsimony analysis of 164 morphological characters supports the monophyly of crown-genus Crocodylus relative to other extant lineages. Crocodylus cataphractus is the basalmost living species,...
Phylogenetic Context for the Origin of Feathers (2000)
Sumida, Stuart S., Brochu, Christopher A.
A number of hypotheses have been suggested for the origin of birds and feathers. Although distributions of functional complexes have frequently been used to test phylogenetic hypotheses, analysis of...
Morphology, Fossils, Divergence Timing, and the Phylogenetic Relationships of Gavialis (1997)
Although morphological data have historically favored a basal position for the Indian gharial (Gavialis gangeticus) within Crocodylia and a Mesozoic divergence between Gavialis and all other...
Vélez-Juarbe, Jorge, Brochu, Christopher A, Santos, Hernán
The Indian gharial (Gavialis gangeticus) is not found in saltwater, but the geographical distribution of fossil relatives suggests a derivation from ancestors that lived in, or were at least able to...