Issue 001 — The Crocodile in the Sphinx’s Stone

THE DEAD RECKONING · ISSUE NO. 001 · OCTOBER 13, 2026

Dispatches from the less familiar world

There is a remarkable amount of history sitting quietly in drawers, beneath familiar landmarks, and on planets where no one has ever taken a walk. Our first numbered edition begins with a crocodile that waited nearly a century for a proper introduction.

FROM THE DEEP TIME DESK · NATURAL HISTORY

The Crocodile in the Sphinx’s Stone

A fossil misidentified in the 1920s has acquired a new name, and the rock it came from has a rather famous neighbor.

Some animals become extinct and then, in a second indignity, get filed under the wrong name. An ancient Egyptian crocodilian has spent roughly a century in this condition. The good news, for anyone keeping score in the fossil cabinet, is that researchers have finally corrected the label.

The animal is Herugavialis cairensis, an extinct, long-snouted member of the gavial group described by a team co-led by University College London researchers. It lived about 45 million years ago, when shallow seas covered parts of what is now Egypt. Its remains were found in the Mokattam Formation—the same geological formation that supplied the stone in which the Great Sphinx of Giza was carved. That does not make the crocodile a contemporary of the Sphinx. In fact, it missed the human builders by approximately 45 million years, which is a fairly substantial scheduling conflict.

The fossils were recovered in the 1920s and originally identified as the modern false gharial, Tomistoma schlegelii. A reassessment of several specimens, including a nearly complete skull, changed that picture. Using CT scans to examine structures inside the skull, the team found anatomical differences, including a distinctive raised ridge near the eyes. Those features supported identifying a separate, previously unrecognized species. The skull is held at the State Museum of Natural History in Stuttgart, where its long second act as a museum specimen may have been rather less eventful than its first.

There is also an irresistible, if strictly coincidental, detail. The fossil skull is missing the tip of its snout. The Great Sphinx, of course, is missing its nose. Researchers named the creature for Heru, an Egyptian deity associated with the monument's possible religious inspiration. To be clear, nobody has demonstrated an ancient relationship between this animal and the Sphinx, nor is one being proposed. The fossil and the monument share geological real estate, not an appointment in history.

What makes the discovery more than a good piece of prehistoric trivia is the view it opens onto an Egypt that looks nothing like the Egypt on postcards. Forty-five million years ago, the region's coastal waters supported multiple kinds of gavials. The Mediterranean's crocodilian past is largely invisible now. The two living gavial species are found far away in Asia, and both face serious conservation threats. Their ancient relatives had a much wider geographic reach.

There is something pleasingly corrective about all of this. We tend to think of museums as places where discoveries go after the work is finished. Sometimes they are where the work starts again. A skull can sit patiently through generations of visitors while technology catches up to the question of what, precisely, has been sitting there all along.

It turns out the stone associated with one of humanity's most recognizable monuments had another story to tell. This one had considerably more teeth.

Source: University College London, October 7, 2026, summarizing the new research published in Royal Society Open Science.

Elsewhere in the Unusual

THE FLIGHT DESK · ON THE DRAWING BOARD

The X-59 Has Learned to Keep Busy

NASA has been putting a very long, very odd-looking airplane through its paces. During the week of September 21, the agency’s X-59 quiet-supersonic research aircraft flew six times—including two flights apiece on September 22, 24, and 25. That was its busiest week so far, and brought the aircraft to 38 test flights. One outing reached Mach 1.53, faster than its planned Mach 1.4 research cruise.

What is it all for? The X-59’s unusual elongated shape is designed to change how the pressure waves of supersonic flight reach people on the ground. Instead of the familiar disruptive sonic boom, engineers hope it can produce a much quieter thump. NASA still needs to measure the sound and eventually study reactions from communities below; a fast week of testing does not, by itself, prove the noise goal has been met.

The aircraft entered a planned maintenance period after that sprint. The slightly wonderfully absurd idea behind the whole project is that the future of flying faster than sound might depend less on speed than on learning how not to make quite such a racket. Source: NASA Quesst mission, October 2, 2026.

THE OFF-WORLD DESK · ROBOTIC EXPLORATION

The Longest Drive, With Nobody Behind the Wheel

On October 11, NASA's Perseverance rover reached 28.10 miles (45.22 kilometers) of driving on Mars, surpassing the 28.06-mile record held by its predecessor Opportunity. That is not much of a margin by terrestrial road-trip standards, but it establishes a new distance record for vehicles operating on another world.

The more interesting part may be who did the driving. NASA reports that Perseverance used its AutoNav system for more than 90 percent of its total distance, using camera imagery to assess hazards and plan routes between waypoints chosen by human operators. Opportunity's corresponding share was about five percent. The newer rover isn't independent of its mission team, but its capacity to make local navigation decisions allows it to cover more ancient terrain without waiting for detailed instructions at every turn.

Perseverance is now working around the rim of Jezero Crater, where researchers hope to examine very old rock and investigate signs of long-vanished environments. The odometer record is a milestone; the geology remains the destination. NASA/JPL mission update, October 12, 2026.

FROM THE GEOLOGY DESK · EARTH SCIENCE

Australia's Spider Is Made of Stone

Western Australia has a spider approximately four kilometers across, and for once nobody needs to check whether it is venomous. Spider Crater in the Kimberley region is an ancient impact structure whose pale sandstone ridges radiate outward like legs. NASA's Earth Observatory featured a new Landsat 9 view of the site on October 13; the satellite captured it on September 20.

The landform's origin was not immediately obvious. A volcanic explanation had once been considered, but geologists found shatter cones—fracture patterns caused by intense impact shock—and other supporting evidence. The spiderlike pattern is thought to reflect a central uplift created by the rebound of the crater floor, with subsequent erosion exposing the ridges. The exact impact date remains uncertain, with estimates ranging roughly from 900 million to 600 million years ago.

This is not a fresh meteorite strike, just a fresh view of an exceedingly old one. The landscape has spent an extraordinary span of time doing its own excavation. NASA Earth Observatory, October 13, 2026.

---

That's the first reckoning. More dispatches will follow; the world, fortunately, shows no signs of becoming less peculiar.