Hildebrandia sp.

  • Hildebrandia sp.

Hildebrandia sp.

  • Location Alemania
  • Product Code: PAHSP003
  • 2.00€

Age: Miocene.
Location: Mainz-Laubenheim.
Hildebrandia Congridae belongs to the family, are teleost fish of the order Anguilliformes . Its name comes from Latin conger , conger meaning . They first appear in the fossil record in the Late Cretaceous .
This is an otolith fossil or solid material is in the vestibular system in many organisms. Allow you to the agency , noting the acceleration and the direction of gravity, the fish serve to hearing. They are used by ichthyologists to determine the age of a fish.
The otoliths appear a few days after birth the fish , as a nucleus around which will be deposited new layers of chalky substance as the animal grows . If you look very closely, series of concentric bands translucent - zone grew slower in winter - and opaque - area grew rapidly in summer , which turn out to be different to accumulate more or less of proteins or aragonite are observed. The number of translucent layers gives us the exact age of the fish in years.
We must take into account a number of circumstances that could lead to error, and environmental changes that generate bands that are not annual or fish migrations that could change the banding pattern .

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