A new look at old sharks
Article Abstract:
The discovery of what is believed to be the most complete fossil shark to date offers an excellent opportunity to study the braincase, hyoid arch and jaws of the ancient Tribodus. Tribodus and other sharks from the family Hybodontidae emerged during the Late Paleozoic era, flourished significantly during the Jurassic period, and became extinct during the Late Cretaceous period. The fossil offers new insights into the morphological diversity, feeding and related behavioral strategies of hybodonts.
Publication Name: Nature
Subject: Zoology and wildlife conservation
ISSN: 0028-0836
Year: 1997
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Selective foraging behaviour of basking sharks on zooplankton in a small-scale front
Article Abstract:
Basking sharks can be found up to 11 meters long. They eat zooplankton on the surface, close to water-mass boundaries, in the summer. There has been little research into their foraging behavior. Research tracking basking sharks shows that they select the richest plankton patches, actively selecting areas with zooplankton above specific densities. They stay in rich patches for as much as 27 hours. Their foraging behavior can be observed in order to record plankton density and distribution.
Publication Name: Nature
Subject: Zoology and wildlife conservation
ISSN: 0028-0836
Year: 1998
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Spines and tissues of ancient sharks
Article Abstract:
Research shows that the shark vertebrate appendage dubbed 'spine-brush complex' belonging to chondrichthyan shark Stethacanthus is made up of globular calcified cartilage. Its exact function is unknown, although experts believes that the tissue may have had an erectile function in courtship. It could also be a fin-baseplate extension.
Publication Name: Nature
Subject: Zoology and wildlife conservation
ISSN: 0028-0836
Year: 1998
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