Fossil fish (Vinctifer sp.)

From collection Fossil collection by Lukas Wallentin

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Details

Designation

Fossil fish (Vinctifer sp.) in nodule

Description

This specimen is a fossilized ray-finned fish belonging to the genus Vinctifer, preserved within a characteristic calcareous nodule. The fossil exhibits an elongated, cylindrical body typical of the Aspidorhynchidae family. A significant portion of the fish is exposed through mechanical preparation, revealing exceptionally well-preserved, articulated rhomboid (ganoid) scales. These scales show a dark brown to black mineralization, creating a sharp contrast against the light-tan to greyish-brown sedimentary matrix. The head region is visible, showing a partially preserved elongated snout or rostrum. The preservation is three-dimensional, which is a hallmark of fossils from the Araripe Basin. The nodule itself is elongated and slightly curved, following the general morphology of the fish. While the mid-section and head are well-defined, the caudal (tail) fin appears to be missing or remains encased within the matrix. The surface of the matrix shows some darker spotting and a rough, natural texture.

Scientific name

Vinctifer sp.

Order

Aspidorhynchiformes

Geological era

Cretaceous

Old

110.00 Mio. Jahre

Location

Araripe Basin

Geological formation

Romualdo Formation