2 October 2025 The Future is the Product of the Past

Egypt dig unearths 41 mln-year-old Whale in desert -Tutcetus rayanensis-

Paleontologists in Egypt announced the discovery of a new species of extinct whale that inhabited the sea covering present-day Egypt around 41 million years ago.

With an estimated length of 2.5 meters and a body mass of approximately 187 kilograms, the new species, named Tutcetus rayanensis, is the smallest basilosaurid whale known to date and one of the oldest records of its family in Africa.

The name of the new whale draws inspiration from Egyptian history and the discovery’s locale. Tutcetus combines “Tut” — referring to the famous adolescent Egyptian Pharaoh Tutankhamun  — and “cetus,” Greek for whale, highlighting the specimen’s small size and young age. Rayanensis refers to the Wadi El-Rayan Protected Area in Fayoum, where the whale was found.

Additionally, the name was chosen to commemorate the centennial of the discovery of King Tut’s tomb and coincides with the forthcoming opening of the Grand Egyptian Museum in Giza.

Despite its modest size, Tutcetus has provided scientists with remarkable insights into the life history, phylogeny and paleobiogeography of early whales.



📣 Our WhatsApp channel is now LIVE! Stay up-to-date with the latest news and updates, just click here to follow us on WhatsApp and never miss a thing!!



Hesham Sallam at Wadi al-Hitan. Photo by Rawan Ezzat

Team leader Hesham Sallam, of the American University in Cairo (AUC), said it was a “remarkable discovery that documents one of the first phases of the transition to a fully aquatic lifestyle”.

From Land to Sea

The Basilosauridae, a family of extinct, fully aquatic whales, represent a crucial stage in whale evolution. As they transitioned from land to sea, the basilosauridae developed fish-like characteristics, such as a streamlined body, a strong tail, flippers, and a tail fin. Their hind legs, which previously served them on land, were no longer used for walking but possibly for mating.

“Whales’ evolution from land-dwelling animals to beautiful marine creatures embodies the marvelous, adventurous journey of life,” Sallam said. “Tutcetus is a remarkable discovery that  documents one of the first phases of the transition to a fully aquatic lifestyle that took place in that  journey.”

The team’s findings have been published in Communications Biology, an open-access journal from Nature Portfolio publishing high-quality research, reviews and commentary in all areas of the biological sciences. Through detailed analyses of the teeth and bones of Tutcetus using CT scanning, the team reconstructed the growth and development pattern of the species. Rapid dental development and small bone size suggest that the whale was precocial, meaning it was able to move and feed itself from birth.

The discovery also adds to our understanding of basilosaurids as successful, competitive, and adaptable during their transition from land to sea. The team’s findings suggest that this transition likely occurred in the (sub)tropics.

“Modern whales migrate to warmer, shallow waters for breeding and reproduction, mirroring the conditions found in Egypt 41 million years ago,” explained Abdullah Gohar, a PhD student at Mansoura University, member of Sallam Lab, and a co-author of the study. “This supports the idea  that what is now known as Fayoum was a crucial breeding area for ancient whales.”

This handout picture provided by the American University in Cairo (AUC) on August 10, 2023 shows Egyptian paleontologist Hesham Sallam (R), professor of vertebrate paleontology at the American University in Cairo (AUC) and founder of Mansoura University Vertebrate Paleontology Center (MUVP), along with Egyptian paleontologists Abdullah Gohar (L) and Mohamed Sameh (C) standing before holotype fossils of their discovery of a new species of extinct basilosaurid whale, Tutcetus rayanensis, that inhabited the ancient sea covering present-day Egypt around 41 million years ago, at Mansoura University Vertebrate Paleontology Centre. Photo by American University in Cairo (AUC)
This handout picture provided by the American University in Cairo (AUC) on August 10, 2023 shows Egyptian paleontologist Hesham Sallam (R), professor of vertebrate paleontology at the American University in Cairo (AUC) and founder of Mansoura University Vertebrate Paleontology Center (MUVP), along with Egyptian paleontologists Abdullah Gohar (L) and Mohamed Sameh (C) standing before holotype fossils of their discovery of a new species of extinct basilosaurid whale, Tutcetus rayanensis, that inhabited the ancient sea covering present-day Egypt around 41 million years ago, at Mansoura University Vertebrate Paleontology Centre. Photo by American University in Cairo (AUC)

The study’s lead author, Mohammed Antar, from the MUVP and the National Focal Point for Natural Heritage, added, “Tutcetus significantly broadens the size range of basilosaurid whales and reveals considerable disparity among whales during the middle Eocene period. The investigation of early layers in Fayoum may reveal the existence of an older assemblage of early whale fossils, potentially influencing our current knowledge of the development of whales.”

One thing is certain: this major discovery is likely one of many more to come. In recent years, Sallam and his team’s discoveries include the bones of a 34-million-year-old rodent, a 37-million-year-old gigantic catfish, snake and legless lizard fossils, and the first evidence of a 100-million-year-old Abelisauroid, a meat-eating dinosaur, in Egypt’s Bahariya Oasis, among others.

“The Eocene fossil sites of Egypt’s Western Desert have long been the world’s most important for understanding the early evolution of whales and their transition to a fully aquatic existence,” said Erik Seiffert, chair and professor of integrative anatomical sciences at the University of Southern California and a co-author of the study. “The discovery of Tutcetus demonstrates that this region still has so much more to tell us about the fascinating story of whale evolution”.

Fayoum Oasis, some 150 kilometres (90 miles) southwest of Cairo, boasts Wadi al-Hitan, the Valley of the Whales, a UNESCO World Heritage Site that has turned up hundreds of fossils of some of the earliest forms of Whale.

Now an oasis in the Western Desert, Fayoum lay under a tropical sea in the Eocene period 56 to 34 million years ago.

Read more about Sallam’s work in AUCToday.

American University in Cairo

Cover Photo: Reconstruction of Tutcetus

Related Articles

Swiss Scientists Identify Arrowhead Made from a Meteoritic Iron

1 August 2023

1 August 2023

In a recent study of archaeological collections in the Lake Biel region in Switzerland, an arrowhead from the Bronze Age,...

In Poland, a 45-meter-long mysterious tunnel found under the ruins of the Saxon Palace

9 September 2023

9 September 2023

A mysterious underground tunnel was found under the ruins of the Saski Palace in Pilsudski Square in Warsaw, the capital...

Egyptian Pharaoh Slain in Battle Because of the Hippos

17 February 2021

17 February 2021

The mummy of Pharaoh Seqenenre Taa II, found in 1880, was re-analyzed. When it was found, the deep wounds on...

Archaeologist Reconstructs 2,000-Year-Old Roman Frescoes from Thousands of Fragments in ‘World’s Toughest Jigsaw’

19 June 2025

19 June 2025

What started as a pile of broken plaster fragments has become one of the most remarkable reconstruction projects in British...

The museum’s “Oscar” Awards had Received this Year by the Troy Museum and the Odunpazarı Modern Museum

11 May 2021

11 May 2021

At the European Museum of the Year Awards (EMYA) online ceremony on May 6, Turkey’s renowned Troy Museum and Odunpazar...

Archaeologists unearthed a pot of copper coins in first major discovery at Mohenjo Daro in Pakistan, in 93 years

18 November 2023

18 November 2023

A pot full of copper coins was discovered from a stupa (a dome-shaped building erected as a Buddhist shrine) at...

Europe’s Oldest Evidence of Winemaking Unearthed in ‘City of Birds’: 7,000-Year-Old Discovery

22 August 2025

22 August 2025

Researchers have uncovered evidence of what is believed to be Europe’s earliest winemaking in the prehistoric settlement known as the...

Exceptional discovery of a fully frescoed chamber tomb dating back to the Republican and Imperial Roman ages

10 October 2023

10 October 2023

Waterworks in Giugliano, a suburb of Campania (Naples), have uncovered an untouched chamber tomb full of frescoes ceilings, and walls...

Private lodges were uncovered in the colosseum of the ancient city of Pergamon

24 September 2021

24 September 2021

Private lodges built for the elite-class people to watch gladiator or wild animal fights shows have been unearthed in the...

2,700-Year-Old Pre-Roman Iron Age necropolis Unearthed in Naples, Italy

8 May 2024

8 May 2024

An approximately 2,700-year-old Pre-Roman necropolis was discovered by archaeologists during excavations conducted in advance of a planned electric power plant...

The Kyrgyz epic ‘Manas’ manuscripts were included in the UNESCO Memory of the World

10 June 2023

10 June 2023

Manuscripts of the Kyrgyz epic “Manas” by narrator Sagymbay Orozbakov have been inscribed on the UNESCO Memory of the World...

“Ladies of Anavlochos”: Crete’s Puzzle in Pieces

9 May 2025

9 May 2025

Perched high on the rugged slopes of Mount Anavlochos, overlooking the azure expanse of the Mediterranean Sea, lie the silent...

A farmer discovered artifacts of the Unetice culture in his field

19 August 2021

19 August 2021

A farmer in Sulęcin county in Poland’s Lubusz province discovered a rare treasure while trying to clear stones from his...

2,000-Year-Old Mysterious Kangju Burial Mound Filled with Gold Jewelry and Mirror Found in Kazakhstan

2 June 2024

2 June 2024

Archaeologists in Kazakhstan have unearthed gold jewelry, arrowheads, and a large, bronze mirror from three burial mounds in the Tolebaitobe...

Ancient DNA Reveals Surprising Maternal Lineages at Neolithic Çatalhöyük

28 June 2025

28 June 2025

New research, utilizing ancient DNA analysis, is challenging long-held assumptions about kinship and societal structures in one of the world’s...