Arab Today, arab today footprints suggest tyrannosaurs were gregarious
Last Updated : GMT 13:00:39
Arab Today, arab today
Arab Today, arab today

Footprints suggest tyrannosaurs were gregarious

Arab Today, arab today

Arab Today, arab today Footprints suggest tyrannosaurs were gregarious

Skeletons of dinosaurs "Albertosaurus"
Ottawa - AFP

Scientists in western Canada have discovered the fossilized footprints of three tyrannosaurs that suggest these fearsome predators may have hunted in packs.
The sets of tyrannosaur footprints are the first ever to be found in proximity to one another and are the only clear evidence so far that these dinosaurs may have been social rather solitary animals.
"The evidence is as strong as you can get with any fossil evidence that tyrannosaurs were pack animals," Richard McCrea of the Peace Region Palaeontology Research Centre, who led the excavation, told AFP on Thursday.
"It shows that these were three animals travelling together, all going in the same direction," he said.
Previously, only individual tyrannosaur footprints have been uncovered in the United States, Canada and Mongolia.
The parallel tracks leading into a rock cliff near Tumbler Ridge, British Columbia indicate the three were walking in a group, "bearing southeast within an 8.5 meter-wide corridor," according to a study published by McCrea's team in the journal PLOS ONE.
The researchers cited "similarities in depth and preservation" of the tracks as proof that they were made by animals "walking concurrently in the same direction."
The three-toed footprints of these very large bipedal carnivores with powerful jaws and small clawlike front legs were discovered by a local guide and outfitter in 2011 in what would have been soft mud 70 million years ago.
Excavation, which is continuing, has uncovered seven footprints in all.
They are believed to have been covered up and preserved by volcanic ash, only to be exposed eons later by the erosion of the cliff.
The footprints -- each half a meter long -- belong to adult animals of different sizes. They predate the Tyrannosaurus Rex, but Albertosaurus and Daspletosaurus -- ancestors of Rex -- once roamed foothills east of the Rocky Mountains.
The discovery also provides valuable new information on how tyrannosaurs moved.
"Their gait was very narrow, with very little rotation of the foot," McCrea noted. "It's quite an efficient locomotion: very long strides, almost four meters.
"We had no idea they walked like that," he said.
"There's been speculation about their biomechanics but prior to the discovery of these trackways, all we had were bones, and theories about how their joints rotated and so on.
"Now we have trackways that we can use to put those hypotheses to the test.
"That's the next step."

 

Name *

E-mail *

Comment Title*

Comment *

: Characters Left

Mandatory *

Terms of use

Publishing Terms: Not to offend the author, or to persons or sanctities or attacking religions or divine self. And stay away from sectarian and racial incitement and insults.

I agree with the Terms of Use

Security Code*

Arab Today, arab today footprints suggest tyrannosaurs were gregarious Arab Today, arab today footprints suggest tyrannosaurs were gregarious

 



Arab Today, arab today
Arab Today, arab today Saudis await visitors but will they come?

GMT 11:54 2017 Thursday ,23 February

Saudis await visitors but will they come?
Arab Today, arab today Sarah Belamesh designs antiques of "ceramic"

GMT 19:45 2017 Monday ,20 February

Sarah Belamesh designs antiques of "ceramic"
Arab Today, arab today Blind sheikh buried in Egypt

GMT 06:32 2017 Thursday ,23 February

Blind sheikh buried in Egypt
Arab Today, arab today Media host Mona Iraqi stresses her show's success

GMT 15:32 2017 Wednesday ,22 February

Media host Mona Iraqi stresses her show's success
View News in Arabic - Culture: أخبار الثقافة والفنون
Arab Today, arab today
Arab Today, arab today
Arab Today, arab today To hold social dialogue over secondary school

GMT 07:43 2017 Wednesday ,22 February

To hold social dialogue over secondary school
Arab Today, arab today UK appoints 1st Scotland Yard chief in 188 years

GMT 05:14 2017 Thursday ,23 February

UK appoints 1st Scotland Yard chief in 188 years
Arab Today, arab today Ex-yoga missionary unleashes rage

GMT 12:16 2017 Thursday ,23 February

Ex-yoga missionary unleashes rage
Arab Today, arab today Pluto's unruly moons

GMT 06:31 2015 Thursday ,04 June

Pluto's unruly moons
Arab Today, arab today Tesla back into red but revenue grows

GMT 07:27 2017 Thursday ,23 February

Tesla back into red but revenue grows
Arab Today, arab today Nissan enhances sales in most markets

GMT 14:08 2017 Monday ,20 February

Nissan enhances sales in most markets
Arab Today, arab today Salma Rashid happy for 'A Whisper of Love'

GMT 05:19 2017 Tuesday ,21 February

Salma Rashid happy for 'A Whisper of Love'
Arab Today, arab today Milan laughs while Rome cries

GMT 10:28 2017 Wednesday ,22 February

Milan laughs while Rome cries

GMT 06:41 2017 Monday ,20 February

Janat pleased for issuing 'Good Morning'

GMT 12:35 2017 Tuesday ,21 February

63-Year-Old Woman Delivers Baby

GMT 14:29 2017 Monday ,20 February

Prepares to present her new collection

GMT 15:53 2017 Tuesday ,21 February

Small ponds have outsized impact

GMT 23:29 2017 Thursday ,16 February

Home built on sand castles-style costs $8m

GMT 07:51 2017 Wednesday ,22 February

Mom's immune system accepts babies

GMT 17:46 2017 Saturday ,18 February

Tourist guide reveals methods of tourist attractions

GMT 13:12 2015 Saturday ,09 May

Sheikh Sultan opens Sharjah Centre

GMT 12:39 2017 Monday ,20 February

newest smartphone another winner for Huawei

GMT 19:10 2017 Friday ,17 February

Hats, scarves add beauty to women
Arab Today, arab today
Arab Today, arab today
 
 Arab Today Facebook,arab today facebook  Arab Today Twitter,arab today twitter Arab Today Rss,arab today rss  Arab Today Youtube,arab today youtube  Arab Today Youtube,arab today youtube
arabstoday arabstoday arabstoday arabstoday
arabstoday arabstoday arabstoday
arabstoday
بناية النخيل - رأس النبع _ خلف السفارة الفرنسية _بيروت - لبنان
arabstoday, Arabstoday, Arabstoday