Stiffening the stingray skeleton — an investigation of durophagy in Myliobatid stingrays (Chondrichthyes, Batoidea, Myliobatidae)
- A. Summers
- Environmental ScienceJournal of morphology
- 1 February 2000
Batoid wing skeletal structure: Novel morphologies, mechanical implications, and phylogenetic patterns
High‐resolution radiography reveals the pattern of calcification in batoid wing elements, and their organization within the fin ray, to be considerably more complex and phylogenetically variable than previously thought.
Material properties and biochemical composition of mineralized vertebral cartilage in seven elasmobranch species (Chondrichthyes)
- M. Porter, J. Beltrán, T. Koob, A. Summers
- Biology, Environmental ScienceJournal of Experimental Biology
- 1 August 2006
Ver vertebral cartilage was found to be as stiff and strong as mammalian trabecular bone and a significant predictor of material properties.
Maneuvering in juvenile carcharhinid and sphyrnid sharks: the role of the hammerhead shark cephalofoil.
It is shown that hammerhead sharks demonstrate greater lateral flexure in a turn than carcharhinids, and that this flexibility may be due to cross sectional shape rather than number of vertebrae.
Olfactory morphology of carcharhinid and sphyrnid sharks: Does the cephalofoil confer a sensory advantage?
Many hypotheses have been advanced to explain the adaptive significance of the sphyrnid cephalofoil, including potential advantages of spacing the olfactory organs at the distal tips of the broad…
Linkage mechanics and power amplification of the mantis shrimp's strike
- S. Patek, B. N. Nowroozi, J. Baio, R. Caldwell, A. Summers
- BiologyJournal of Experimental Biology
- 15 October 2007
The results of the morphological, kinematic and mechanical analyses suggest a multi-faceted mechanical system that integrates latches, linkages and lever arms and is powered by multiple sites of cuticular energy storage.
Kinematic Analysis of Suction Feeding in the Nurse Shark, Ginglymostoma cirratum (Orectolobiformes, Ginglymostomatidae)
The feeding kinematics of a suction feeding shark, the nurse shark Ginglymostoma cirratum, are investigated to test for differences in the timing and magnitude of feeding components with other shark taxa when sharks were fed pieces of bony fish.
Kinematics of aquatic and terrestrial prey capture in Terrapene carolina, with implications for the evolution of feeding in cryptodire turtles.
- A. Summers, K. F. Darouian, A. Richmond, E. Brainerd
- Environmental ScienceThe Journal of experimental zoology
- 1 July 1998
It is concluded that the function of hyoid depression during aquatic feeding in cryptodire turtles is to prevent the forward motion of the predator from pushing the prey away (compensatory suction), and it is not appropriate to use extant turtles in attempts to reconstruct the terrestrial feeding mechanisms of primitive amniotes.
Mineralized cartilage in the skeleton of chondrichthyan fishes.
Structure and function of the horn shark (Heterodontus francisci) cranium through ontogeny: Development of a hard prey specialist
With a tight jaw joint and loose mandibular symphysis, as well as nearly opposite patterns of stiffness in the jaws, it is clear that two of the clades of hard prey specialists use very different methods for cracking the hard prey problem.