Ammonites inhabited our oceans for 440 million years, from the Devonian to the end of the Cretaceous period (66 million years ago). They are very varied and abundant cephalopod molluscs. Cephalopod animals are characterized by having tentacles on their heads - hence their scientific name, which literally means "head with feet" - like today's octopus or squid.

Ammonites had a soft part and a hard part, their shell. The latter, formed by Aragonite, is divided into 2 parts: the Fragmocomo, where the empty chambers of ammonite are found and the Chamber of habitation, where the soft part of ammonite was housed, that is, the organs and the animal itself . However, the Room Chamber was not as mineralized as the Fragmocomo. This is why it rarely fossilized. Although we currently find only the ammonite shells, their approximate appearance was as follows:

Source: https://masneuquen.com/amonites-del-neuquen/

The ammonites regulated its buoyancy thanks to an organ called Sifunculus, the only one located within the Fragmocomo, which injected or extracted water and gas from its shell to ascend or descend. This was very useful, since ammonites lived deep during the day and rose to the surface at night.

Currently, we know that they lived both in areas near the coast and in open oceans, at a depth of up to 500m. However, we do not know exactly what his diet was.

As a curiosity, it should be noted that there are ammonites that have fossilized thanks to the process of pyritisation or, due to the sediment of the area, have fossilized in opal and the result are these fascinating colored fossils:

Toptrilos Collection

Toptrilos Collection

After more than 400 million years inhabiting our oceans, ammonites disappeared in the late Cretaceous. The effects of the intense volcanic activity of this period, together with the impact of the asteroid in Yucatan, caused an acidification of the waters of the oceans. The ammonite offspring failed to survive, as acidic water destroyed their fragile calcium carbonate proto-shells and those of the adults were also severely damaged.

 

We hope this information was as fascinating to you as it is to us. If you want to see our ammonite specimens and continue learning, do not hesitate to visit our catalog. With respect and enthusiasm, we share with you our great passion, always offering you the best quality, 100% natural, without restorations.

 

https://www.toptrilos.com/amonites

Enjoy them!

Sources consulted: https://masneuquen.com/amonites-del-neuquen/; https://www.youtube.com/watch?v=aogbFp0NGRY

Fuente: https://masneuquen.com/amonites-del-neuquen/

Los ammonites regulaban su flotabilidad gracias a un órgano denominado Sifúnculo, el único ubicado dentro del Fragmocomo, que inyectaba o extraía agua y gas de su concha para ascender o descender. Esto era de gran utilidad, pues los ammonites vivían durante el día en la profundidad y ascendían en las noches hacia la superficie. 

Actualmente, sabemos que vivieron tanto en zonas cercanas a la costa como en océanos abiertos, a una profundidad de hasta 500m. Sin embargo, desconocemos con exactitud cuál era su dieta. 

A modo de curiosidad, cabe señalar que hay ammonites que han fosilizado gracias al proceso de piritización o, debido al sedimento de la zona, han fosilizado en ópalo y el resultado son estos fósiles de colores fascinantes: 

Colección de Toptrilos

Amonite Opalizado

Colección de Toptrilos

Tras más de 400 millones de años habitando nuestros océanos, los ammonites desaparecieron a finales del Cretácico. Los efectos de la intensa actividad volcánica de este periodo junto al impacto del asteroide en Yucatán, provocaron una acidificación de las aguas de los océanos. Las crías de los amonites no consiguieron sobrevivir, pues el agua ácida destruía sus frágiles protoconchas formadas por carbonato de calcio y las de los adultos también se vieron gravemente dañadas.  

 

Esperamos que esta información le haya resultado tan fascinante como a nosotros. Si quiere ver nuestros ejemplares de ammonites y continuar aprendiendo, no dude en visitar nuestro catálogo. Desde el respeto y el entusiasmo, compartimos con usted nuestra gran pasión, siempre ofreciéndole la mejor calidad, 100% natural, sin restauraciones.

www.toptrilos.com/amonites

¡Disfrútalos!

Fuentes consultadas: https://masneuquen.com/amonites-del-neuquen/; https://www.youtube.com/watch?v=aogbFp0NGRY

Contact

Tel/Phone: 627 64 88 98 - 680 36 96 12

 

E-mail: info@toptrilos.com

Write us
Trilobites

|

|

|

|