Dear Jaime,

I am not a palaeontologist (which means I can be wrong!), but the fossils look like rudists to me, according to similar limestone samples I have seen in Spain, Portugal and Italy. Hope I am not giving you wrong directions...

Best,

Diego

Dear Diego, yes, I also received the same opinion from other researchers.

Thanks!

Most likely rudists, though sponges might be possible, too.

They are almost rudists.

Thanks Rawand and Steffen!

The perforations are postsedimentary and although they point to a type of ichnofossils the context should be better known. The body fossils resemble the remains of an eroded limestone lumachelle, possibly originating from a relatively abundant Rudista (Hippuritoida) reef in the Cretaceous.

Dear all, many thanks for your comments, they were very useful!.

Best wishes

Jaime

Dear Jaime,

welcome.

I am happy that your question got many reads and several replies, even if its subject matter was classified as "a discussion in Identification (Psychology)". There must be some issue concerning RG's algorithms and subject recognition… Perhaps you should report the mistake to the RG team, for the sake of palaeontology!

Un cordial saludo,

Diego

Hello Jaime,

At least several fragments in the three images correspond to radiolitid rudists (Bivalvia, order Hippuritida, family Radiolitidae). The celluloprismatic structure of the outer shell layer (you can see it in the fragments), is considered a main diagnostic feature of the Radiolitidae.

Saludos!

Dear Luis, many thanks for all the information, very useful!

Saludos

Jaime

Very similar to shallow water rudists (see attached file), I attached an outcrop photo from the Turonian "Formacion Dolomias de Ciudad Encantada" (Pico Rope, Chera, West-Valencia)

Possibly Polyconitids of the Aptiense-Albiense of the central surpirinaica zone (Spain).

Oh, thanks for the information and the photo José

Saludos

Jaime

Parecen rudistas.

Si, es lo mas probale, muchas gracias César.

Saludos!

Como dice Luis Toya y muestra Patrick Zell son rudistas radiolítidos abundantes en las plataformas del Cretácico Superior, comunes en el Camapniense-Mastrichtiense!

Muchas gracias Reinaldo, saludos!

Diego E. Angelucci

I refer to your comment 'I am happy that your question got many reads and several replies, even if its subject matter was classified as "a discussion in Identification (Psychology)". There must be some issue concerning RG's algorithms and subject recognition.'

The poster of the question has the ability to put in and amend the key words when posting the question.

Alan F Rawle

Thank you for your comment.

You are right, the key words can be edited. Still, the issue here is not about key words, as "identification" is correct (I guess that Jaime A. Villafaña put it in). The point refers to the subject matter attached to it ("psychology"), which is misguided.

Regards,

Diego E. Angelucci

Highly inequivalve reef forming cretaceous Bivalves (Rudists)