Jaime A. Villafaña

5 Questions 15 Answers 0 Followers

Questions related from Jaime A. Villafaña

Does anyone know an actual species of myliobatis with this dental plate?.

Does anyone know a actual species of myliobatis with a similar dental plate?. The plates are hexagonal with a high crown, 5 to 6 central rows in the upper tooth plate and 15 central rows in the...

23 September 2015 7,436 7 View

Can anyone help me with the identification of these crustacean?

This record is from Chile (Neogene)

04 June 2015 6,023 7 View

Does someone know the fossil record of the genus Pliotrema?

Recently, I reviewed a serrated tooth like Pristiophorus, this tooth has an approximate age of Late Miocene-early Pliocene Chile. Can this specimen be found in this location?

01 August 2014 3,399 3 View

Any researcher working on Neogene fossil fishes from Japan?

Dear all, I am starting a study on diversification patterns of Neogene fishes (chondrichthyes+bony fishes) from Japan. The main objective is to estimate richness, and rates of origination and...

01 January 1970 9,965 0 View

Does anyone have any idea about this fossil?

Hi all: Any idea of the identification of these fossils?, SW of Valencia (Montesa). Late Cretaceous according to the geological map. Maybe an echinoderm? All the best Jaime

01 January 1970 8,956 20 View