Monoplacophorans. Molluscs. Invertebrates. Animal Kingdom. Wildlife. Fauna. Zoology.

They are mollusks that descend from the primitive species that populated the seas in ancient times.

They have a single slightly conical shell and segmented organs, which is why they are considered a link between mollusks and annelids.

They lack eyes and the ventral surface is occupied in its central part by the foot, almost circular, surrounded by five pairs of very primitive gills, with an excretory orifice in each one.

The digestive system has a mouth with a chewing system, esophagus, stomach and anus.

Neopilin

Neopilina is a true living fossil, unknown until 1953 when it was discovered among the dredged materials on the coast of Costa Rica, and resembles some fossils from the Cambrian period.



Other information about Molluscs

• Introduction
• Monoplacophores
• Poliplacophores
• Scaphopods
• Gastropods
  • Slugs or Limacos
  • Snails
• Bivalves or lamelibranchs
  • Freshwater clams
  • Margaritone (Margaritifera auricularia)
  • Zebra mussel (Dressenia polymorpha)
• Cephalopods



Other information about fauna in Aragón:

A small list of species in Aragon would be the following:

Vertebrates	Invertebrates
Mammals Red squirrel. Bear. Fox. Artiodactyl Ungulates Deer. Wild pig. Birds Classification of Birds Storks. Capercaillies. Reptiles Amphibians Urodelos.    Marbled Triton.    Webbed Triton.    Pyrenean triton. Anurans. Fishes	Metazoans Arthropods Myriapods Insects Arachnids Spiders Crustaceans Annelids Worm Molluscs Asquelmintos Platelmintos Celentereos Porifera Protozoa
images about the fauna in Aragon.    photographs on invertebrates.    beneficial animals for agriculture.



Auch Aragon genießt eine vielfältige und abwechslungsreiche Natur, in der Pflanzen vorbeigehen, Tiere, Geologie oder Landschaften erreichen wir ein fantastisches Bestiarium, das in seinen Denkmälern lebt.

Die Informationen werden ohne einen Spaziergang durch die drei Provinzen nicht vollständig sein, mit Abschaltungen in einigen seiner spektakulären Landschaften wie Ordesa, der Moncayo, Monegros oder durch Widerspruch den Ebro.

Sie können sich auch den immateriellen widmen: von der Legendenzusammenstellung das gilt auch für das universelle Aragon.