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New Extinct Crocodilian Genus Discovered in Sphinx Limestone

A fossil crocodilian, found in the same limestone used to build the Great Sphinx of Giza, has been reclassified as a new genus, potentially shedding light on the evolutionary history of these ancient reptiles.

The fossil, dating back 45 million years, was initially identified as an extinct species of Tomistoma. However, detailed analysis using advanced 3-D X-ray methods revealed it represents an undescribed genus of gavial, a group of crocodilians known for their long, slender snouts.

Researchers have named the new genus Herugavialis cairensis, a nod to the Egyptian god Heru associated with the Sphinx. Coincidentally, the fossil's snout tip is also missing, mirroring the Great Sphinx's famous lack of a nose.

This discovery suggests a more complex evolutionary path for gavials in Africa than previously understood. Herugavialis appears to have branched off early in the gavial lineage and inhabited nearshore saltwater environments, unlike modern freshwater gavials.

The finding highlights the rich biodiversity of ancient Egypt, with numerous other fossils of fish, sharks, and mammals found in the same geological formation. This is the first such discovery to be directly linked to the Sphinx.

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