About: Hybodontiformes   Sponge Permalink

An Entity of Type : owl:Thing, within Data Space : 134.155.108.49:8890 associated with source dataset(s)

Hybodontiformes was an order of sharks, they were characterised by possessing 1-2 pairs of hooked protrusions on their heads.

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rdfs:label
  • Hybodontiformes
rdfs:comment
  • Hybodontiformes was an order of sharks, they were characterised by possessing 1-2 pairs of hooked protrusions on their heads.
  • Hybodontiformes were characterized by paired fins that show signs of intrinsic musculature, and greater flexibility, implying that they were used in steering. They had a heterocercal tail, an anal fin and amphistylic jaw suspension. Hybodonts were also the first group to possess a heterodont dentition (different shaped teeth along the length of the jaw). For instance, having sharp cutting teeth in the front part of their jaw and flat crushing teeth in the back part of the jaw allowed them to feed on a variety of food types. The Hybodontiformes also possessed a full set of hemal, as well as neural, arches around the notochord.
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dbkwik:fossil/prop...iPageUsesTemplate
Name
  • Hybodontiformes
Caption
  • Hybodus fraasi from Eichstätt, Germany.
fossil range
imagewidth
  • 250(xsd:integer)
Families
  • *Acrodontidae *Hybodontidae *Lonchidiidae *Polyacrodontidae *Ptychodontidae
Order
  • Hybodontiformes
Infraclass
abstract
  • Hybodontiformes was an order of sharks, they were characterised by possessing 1-2 pairs of hooked protrusions on their heads.
  • Hybodontiformes were characterized by paired fins that show signs of intrinsic musculature, and greater flexibility, implying that they were used in steering. They had a heterocercal tail, an anal fin and amphistylic jaw suspension. Hybodonts were also the first group to possess a heterodont dentition (different shaped teeth along the length of the jaw). For instance, having sharp cutting teeth in the front part of their jaw and flat crushing teeth in the back part of the jaw allowed them to feed on a variety of food types. The Hybodontiformes also possessed a full set of hemal, as well as neural, arches around the notochord. In the genus Hybodus, the mouth is situated underneath the snout, as in most living elasmobranchs.
is ordo of
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