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Why pre-dinosaur vegetarians had large canines

Published

9 years ago

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London: The pattern of teeth in Tiarajudens eccentricus — a herbivorous mammalian ancestor having large sabre-like protruding canines — has puzzled researchers since the discovery of the mammalian four years ago.

After intense study, the researchers have now concluded that T. eccentricus, which lived on earth 270 million years ago, used these sabre-like teeth for inter-specific male-male combat — much like what we see between male deer today.

“Fossils always surprise us. Now they show us that 270 million years ago, two forms of inter-specific combat, represented in deer today, were already present in the forerunners of mammals,” said lead researcher Juan Carlos Cisneros.

The results were published in the journal Royal Society Open Science.

Sabre-teeth are known to belong to the large Permian predators gorgonopsians (also known as sabre-tooth reptiles), and in the famous sabre-tooth cats from the Ice Age.

The discovery of T. eccentricus, a Brazilian species, also allowed for a reanalysis of the South African species Anomocephalus africanus, discovered 10 years earlier.

The two species have several similar features that clearly indicated they are closely related but the African species lack the sabre-tooth canines of its Brazilian cousin.

In the Middle Permian epoch around 270 million years ago, the first communities with diverse, abundant tetrapod herbivores were evolving.

In deer today, enlarged canines are used in male-male displays during fighting.

The long canine in the herbivore T. eccentricus is interpreted as an indication of its use in a similar way, and is the oldest evidence where male herbivores have used their canines during fights with rivals.

“It is incredible to think that features found in deer such as the water deer, musk deer and muntjacs today were already represented 270 million years ago,” Cisneros said.

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Apple is giving a huge discount on its gadgets: Details inside

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2 years ago

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May 5, 2022

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If you want to buy an iPhone and were waiting for a nice offer, then we have a piece of good news for you! Amazon Summer Sale May 2022 has begun and they are offering major discounts on various smartphones, laptops, and smart TVs, among others.

The sale is live now on the e-commerce platform with no-cost EMI options and exchange discounts on various products. In addition to this, Amazon has also partnered with several banks including ICICI, Kotak Bank, and RBL so that customers get instant discounts of up to 10% using their cards and EMI transactions.

Customers can easily enjoy this summer sale and get massive discounts on iPhones. They can also compare prices on Flipkart Big Saving Days Sale 2022 before making a purchase.

 

Amazon Summer Sale May 2022: Discount offer on iPhone 13 

Apple’s coveted phone model iPhone 13 in the 128 GB storage model will be available during the Amazon Summer Sale May 2022 for Rs 64,900. The MRP of the phone is Rs 79,900. This means that the customers will be able to enjoy a discount of up to Rs 15,000 on the purchase of the iPhone 13.

If you have an old iPhone in working condition then you will also be eligible to receive another additional discount worth up to Rs 17,000 on the iPhone 13.

Buy at Rs. 64,900 (MRP – Rs. 79,900)

Features of Apple iPhone 13 

The iPhone is powered by an A15 Bionic processor with 6 core CPU. Apart from this, it has 16 core neural engines. With the iPhone 13, up to 512 GB of storage will be available. The iPhone 13 has a 6.1-inch Retina XDR display with 1000 nits brightness.

The iPhone 13 has a 12-megapixel dual rear camera setup. This time a new wide-angle camera has been given, whose aperture is f/1.6. With this, there is support for sensor optical stabilisation. Night mode has been made better than before. The second lens is also 12 megapixels ultra-wide and has an aperture of f/2.4.

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