Cacibupteryx caribensis is a Late Jurassic pterosaur from Cuba’s Jagua Formation. Its holotype preserves a three-dimensional partial skull and fragments of the left wing, an unusual combination for an Oxfordian pterosaur. The snout tip, lower jaws and most of the skeleton are missing. It is included in the pterosaur catalogue as a rare Caribbean record whose anatomy supports comparisons but not a complete reconstruction.
Quick facts
| Name | Cacibupteryx caribensis Gasparini et al., 2004 |
|---|---|
| Group | Rhamphorhynchidae |
| Age | Middle–Late Oxfordian, Late Jurassic |
| Place | Jagua Vieja Member, Jagua Formation, Cuba |
| Holotype | IGO-V 208, partial skull and left-wing fragments |
| Preservation | Three-dimensional, not flattened |
| Diet | Unknown; no food remains reported |
What can the fossils tell us?
Its shape permits useful comparison, but missing parts cannot be restored directly from this specimen.
They confirm some wing anatomy but do not provide a full span or flight performance.
It extends the known record but does not demonstrate a particular island ecology or diet.
A rare Jurassic pterosaur from western Cuba
Zulma Gasparini, Marta Fernández and Marcelo de la Fuente named Cacibupteryx caribensis in 2004. Holotype IGO-V 208 was collected near Mogote Jagua Vieja in the Viñales Valley, Pinar del Río Province. It comes from the Jagua Vieja Member of the Jagua Formation, dated to the middle–late Oxfordian of the Late Jurassic. The genus combines a Taíno word meaning “lord of the sky” with the Greek word for wing; the species name refers to the Caribbean.
The skull is incomplete but unusually well preserved in three dimensions rather than flattened. The tip of the snout and the lower jaws are absent. Associated wing material includes the distal end of the left ulna, radius fragments and parts of the wing finger. These elements do not make a complete skeleton, so overall proportions and wingspan remain uncertain.
What the skull preserves
The preserved skull retains spatial relationships among bones, including the orbit, temporal openings and palate. Three-dimensional preservation enables comparisons that can be difficult with compressed fossils. The tooth-bearing front of the jaws is missing, however, so tooth form and the complete snout outline cannot be observed. The describers assigned it to Rhamphorhynchidae based on a combination of cranial characters.
It shares features with Jurassic pterosaurs known elsewhere, but it does not simply duplicate one of them. Comparison with Rhamphorhynchus can clarify the family context, not supply every missing bone. Similarity is not a licence to fill the Cuban specimen with one better-known species.
What the wing fragments tell us
The wing bones confirm that the skull belonged to a flying reptile, but they do not yield a direct full span or reliable body mass. Flight speed, manoeuvrability and the balance between soaring and flapping would require a fuller model and assumptions about membrane shape and soft tissues.
The fossil matters because Jurassic pterosaurs are unevenly represented and three-dimensional skulls are rare. Its contribution is anatomical and geographic: a distinct rhamphorhynchid lived in the region now represented by western Cuba during the Oxfordian. The specimen does not record a flock, migration route or coastal hunt.
Diet and reconstruction
The rostral tip and lower jaws are missing, and no stomach contents or prey remains are reported. Marine deposits provide context but do not prove fish-eating. A suggested menu remains an inference from relatives and surviving anatomy.
A full-body illustration supplies the missing beak, teeth, long tail, wing membrane, covering and colour. Those details may be informed comparisons, but direct evidence is narrower: an incomplete three-dimensional skull and several bones from a left wing.
Frequently asked questions
When did it live?
It comes from middle–late Oxfordian rocks of Cuba’s Jagua Formation in the Late Jurassic.
What does the holotype preserve?
IGO-V 208 includes a three-dimensional partial skull and left-wing fragments, but no snout tip or lower jaws.
Is its wingspan known?
No. The wing bones are too fragmentary to provide a complete span.
What did it eat?
Its diet is unknown because the front jaws and direct food remains are absent.