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Tyrannosaur’s last meal was two baby dinosaurs

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Dr Darla Zelenitsky and Dr Francois Therrien with the full tyrannosaur fossil (pic BBC)

The last meal of a 75-million-year-old Tyrannosaur has been revealed by scientists – two baby Dinosaurs.

Researchers say the preservation of the animal – and of the small, unfortunate creatures it ate – shines new light on how these predators lived.

It is “solid evidence that tyrannosaurs drastically changed their diet as they grew up,” said Dr Darla Zelenitsky, from the University of Calgary.

The specimen is a juvenile Gorgosaurus – a close cousin of the giant T. rex.

Diagram of prey remains inside the fossilised tyrannosaur(Image source, BBC/Royal Tyrell Museum of Palaeontology)

This particular Gorgosaur was around seven years old – equivalent to a teenager in terms of its development. It weighed about 330kg when it died – about a tenth of the weight of a fully-grown adult.

The hind limbs of two, small bird-like dinosaurs called Citipes are visible beneath its rib cage.

“We now know that these teenage [Tyrannosaurs] hunted small, young dinosaurs,” said Dr Zelenitsky, one of the lead scientists in this study, which published in the journal Science Advances.

An artist's impression of the tyrannosaur hunting
The juvenile Gorgosaur would have chased small therapods and ‘dissected’ them with its blade-like teeth (pic BBC)

An array of earlier fossil evidence, including evident bite marks on the bones of larger dinosaurs that match tyrannosaur teeth, have allowed scientists to build a picture of how the three-tonne adult Gorgosaurs attacked and ate very large plant-eating dinosaurs which lived in herds.

Dr Francois Therrien, from the Royal Tyrell Museum of Palaeontology, described these adult tyrannosaurs as “quite indiscriminate eaters”. They probably pounced on large prey, “biting through bone and scraping off flesh,” he told BBC News.

But, Dr Zelenitsky, added, “these smaller, immature tyrannosaurs were probably not ready to jump into a group of horned dinosaurs, where the adults weighed thousands of kilograms”.

‘Toes poking through the ribcage’

The fossil was originally discovered in the Alberta Badlands in 2009 – a hotspot for dinosaur hunters.

Entombed in rock, it took years to prepare and it wasn’t immediately obvious that there was prey inside. Staff at Alberta’s Royal Tyrell Museum of Palaeontology eventually noticed small toe-bones sticking out from the ribcage.

“The rock within the ribcage was removed to expose what was hidden inside,” explained Dr Therrien, who is the other lead scientist in this study. “And lo and behold – the complete hind legs of two baby dinosaurs, both under a year old.”

Dr Zelenitsky said that finding only the legs suggested that this teenage Gorgosaurus “seems to have wanted the drumsticks – probably because that’s the meatiest part”.

Diagram showing scale of adult and juvenile gorgosaurus
Adult Gorgosaurs grew to ten times the size of this 300kg juvenile (Image source, Royal Tyrell Museum of Palaeontology)

The Gorgosaurus is a slightly smaller, more ancient species than T. Rex. Fully grown, these were – as Dr Therrien put it – “big, burly tyrannosaurs”.

They transformed as they matured. “Juveniles were much more lightly built – with longer legs and very blade-like teeth,” he explained. “Adults’ teeth are all much rounder – we call them ‘killer bananas’. “This specimen is unique – it’s physical proof of the juveniles’ very different feeding strategy.

While the adults bit and scraped with their powerful “killer banana” teeth, “this animal was selecting and even dissecting its prey – biting off the legs and swallowing them whole”.

The juvenile gorgosaurus skull
The tyrannosaur’s skull and blade-like teeth (Image source, Royal Tyrell Museum of Palaeontology)

Prof Steve Brusatte, a palaeontologist from the University of Edinburgh and the National Museum of Scotland, said that seeing prey in the dinosaur’s guts gave a real insight into the animals: “They weren’t just monsters, they were real, living things and pretty sophisticated feeders.”

Recalling a depiction of T. rex in the 1993 film Jurassic Park – where the giant dinosaur chased a car through the fictional theme park – Prof Brusatte added: “A big, adult T. rex wouldn’t have chased after a car – if cars or jeeps were around back then – its body was too big, and it couldn’t move that fast.

“It would be the youngsters – like this gorgosaur – the children of T. rex that you’d have to keep an eye on.”

(BBC)



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Sun directly overhead Neriyakulam, Punewa, Kebithigollewa, Pankulam and Sinhapura at about 12.10 noon today (31)

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The sun is going to be directly over the latitudes of Sri Lanka from  28th of August to 07th of September due to its apparent southward relative motion.

The nearest places of Sri Lanka over which the sun is overhead today (31) are Neriyakulam, Punewa, Kebithigollewa, Pankulam and Sinhapura about 12.10 noon.

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BASL takes exception to Justice Ganepola being denied a place in SC

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… highlights injustice caused to Justice R. Gurusinghe

The Bar Association of Sri Lanka (BASL) has alleged that due to the failure on the part of President Anura Kumara Dissanayake to fill the existing vacancies in the Supreme Court, a Senior Justice of the Court of Appeal, Justice Dhammika Ganepola, retired at the age of 63 without being considered for, or granted, a promotion to the Supreme Court, to which he was well entitled. The BASL pointed out at the time of Ganepola’s retirement there were four vacancies in the Supreme Court.

In a letter dated 17 August, 2026, addressed to President Dissanayake, the BASL declared that the failure to promote and recognise Ganepola’s distinguished judicial service, resulting in his retirement at the age of 63, is indeed a loss to the Judiciary.

A top BASL spokesman told The Island yesterday (30) that the Bar Council, over the weekend, had decided to release the hitherto confidential letter.

The official said that they also wanted to remind the President of his assurance given to BASL, on 12 August, 2026, that vacancies in the Supreme Court and Court of Appeal would be filled as soon as possible, within a month.

The following is the text of the BASL letter, signed by  Rajeev Amarasuriya, President, BASL, and its Secretary Nalin De Silva: “We write further to our letters dated 29th December 2025 and 30th June 2026 in relation to the above, to which we have not received any response.

We also refer to our meeting with Your Excellency on 12th August. As discussed during the meeting, there have been vacancies in the Supreme Court since May 2025, and the number of vacancies has now increased to four (04). There are also four (04) vacancies in the Court of Appeal. These are all matters we have already written to Your Excellency about.

Your Excellency informed the BASL Delegation when we met that you would be taking steps to make recommendations to fill these vacancies as soon as possible, within a month.

We write to reiterate the importance of giving due consideration to the criteria set out in our aforesaid letter dated 29th December 2025. We also wish to emphasise that, in making judicial appointments and promotions, seniority should be given due priority, in keeping with longstanding practice, until such time there are objective and defensible guidelines governing the assessment of merit.

The only justifiable departure to this criterion would be where there exists a specific and recognized demerit in respect of the particular Judge concerned or such other known compelling circumstances that are objectively identifiable such as where a Judge has previously been overlooked for promotion unfairly or conversely, where a Judge has been unfairly previously granted promotions above others.

This approach will safeguard both the integrity of the Judiciary and the trust reposed in it by the public.

Further, while there has been considerable discussion and representation by the Government regarding the importance of retaining experienced judges, as reminded to Your Excellency at our said meeting that, only a few months ago on 8th May 2026, a Senior Justice of the Court of Appeal, Justice Dhammika Ganepola, retired at the age of 63 without being considered for, or granted, a promotion to the Supreme Court, to which he was well entitled, and in which there were four vacancies at the time.

The failure to promote and recognise his distinguished judicial service, resulting in his retirement at the age of 63, is indeed a loss to the Judiciary.

We also drew Your Excellency’s attention at the said meeting to the fact that the Senior-most Justice of the Court of Appeal, Justice R. Gurusinghe, who joined the Judicial Service in 1996, who also Acted in the Office of President of the Court of Appeal (appointed by Your Excellency) on 11th May 2026, is due to retire at the end of this month. In fact, we learnt through the Media that Her Ladyship then Chief Justice Justice Murdu Fernando, PC, had previously in July 2025 recommended to Your Excellency the promotion of Justice R. Gurusinghe to the Supreme Court, but the same is pending from that time.

 He too is well deserving of promotion to the Supreme Court and has already been recommended by the former Chief Justice, and his case must also receive due and urgent consideration before his impending retirement.

We hope that Your Excellency will take due note of and give due regard to the concerns of the Bar, as well as to the established principles, practices and conventions governing judicial appointments, when taking steps to fill these vacancies.

On this, Your Excellency is already open to the accusation that these vacancies have been kept open, to fill with favourites of the Government which is yet another serious indictment on the independence of the judiciary which accusation would be confirmed if recommendations are made outside established practice.

Moreover, the BASL expresses grave concern that withholding promotions of Judicial Officers for extended periods of time places undue pressure on Judicial Officers in the discharge of their duties and constitutes both directly and indirectly, interference with the independence of the Judiciary, in addition to the strain obviously caused to the dispensation of justice in other Courts and the stifling and delay of career progression of Judges legitimately entitled to promotions.

We do hope that Your Excellency would take due note and cognizance of the foregoing when effecting these judicial promotions which have been long overdue and which have already adversely impacted the efficiency and effectiveness of the administration of justice.”

The BASL has copied the letter to Prime Minister Dr. Harini Amarasuriya, Speaker Dr. Jagath Wickremaratne, Opposition Leader Sajith Premadasa and all members of the Constitutional Council.

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Sajith challenges govt. to hold PC polls

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Sajith

Opposition Leader Sajith Premadasa on Saturday (29) challenged the government to hold the long-delayed Provincial Council elections, saying the polls would provide an opportunity to gauge the level of public support enjoyed by the administration.

Addressing a farmers’ meeting in Tissamaharama, Hambantota, Premadasa also criticised the latest Rs. 17 per kilogram increase in wheat flour prices, warning that it would push up the prices of bread, bakery products and other flour-based food items and place further pressure on households already struggling with the rising cost of living.

He said Sri Lanka ranked 120th among 130 countries in an international comparison of minimum wages, arguing that wages remained inadequate to meet the escalating cost of living.

Premadasa also questioned official assessments of living standards, asking whether a person could survive for an entire month on Rs. 17,315, a figure he attributed to the Department of Census and Statistics.

He claimed that between 30 and 40 percent of the population was living in poverty and called for a clear programme to help affected families improve their economic conditions.

Turning to the proposed 22nd Amendment to the Constitution, which seeks to increase the retirement age of superior court judges, the Opposition Leader accused the government of attempting to undermine judicial independence and interfere with democratic institutions.

He also criticised the government’s handling of poverty, employment, agriculture, healthcare and investment, saying more effective measures were needed to provide relief to people facing economic hardships.Premadasa called for stronger policies to attract foreign direct investment and urged the government to formulate a national strategy for developing the tourism industry.

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