Paleontologists found that the love song prince of Cretaceous turned out to be a little crocodile. In the animal kingdom, birds and mammals will attract the opposite sex through their melodious calls, and we humans have developed this courtship call into a love song. Reptiles lacking vocal organs are usually very silent, but recent research has found that a small crocodile living in Cretaceous is a master of singing love songs! Bauru Basin, a peasant crocodile, is located in southeastern Brazil, where a large number of paleontological fossils have been found, including many Cretaceous crocodile fossils. Legend: Lu Bao Basin, the picture comes from the network 20 1 1 year. Paleontologists Fabiano V. Iori Yagami and I * * * Ar S. Cavaroz named the crocodile "Caipirassus" according to the fossils found in the Lu Bao Basin, and the common name came from the Portuguese word "Caipirassus". The model of the farmer crocodile is Caipirasuchus paulistanus, which comes from the place where its normal specimen was found. Legend: The location where the crocodile fossils of farmers were found, with pictures from the Internet Legend: Paleontologists and their crocodile fossils of farmers, with pictures from the Internet. After the establishment of Crocodile, paleontologists named three other species according to fossils, and the second species, Caipirassus Altug, was named in 2008. The normal specimen number of Monti Altug crocodile is MPMA 15-00 1/90, including the complete skull and mandible fossils. It was found only 8 kilometers away from Monti Altug, which is why it was named. Legend: The C of the farmer crocodile skull discovered by paleontologists is MPMA 15-00 1/90. The picture comes from the internet. Farmer crocodile is a small crocodile with a body length of about 1 m. Although the farmer crocodile is small, its head is very big. Farmer crocodiles have big eyes on their big heads, so their eyesight must be good. The overall proportion of the head of the farmer crocodile is shorter and higher. Legend: The farmer crocodile's bag has been restored. The picture comes from the internet. The farmer crocodile has a big mouth with two rows of sharp teeth. Unlike the crocodile teeth we are familiar with, the teeth of the farmer crocodile are not conical, but flat and bent backwards, just like the teeth of dinosaurs. Crocodiles have a short neck, a strong back, and osteogenesis in the back and tail, which can play a protective role. There is a long tail behind the farmer crocodile, but this tail is also different from the crocodile's tail today. The tail end is slender, not widened and flat. Crocodile's limbs grow on both sides of the body, which is surprisingly long and basically perpendicular to the ground. The crocodiles we see today are not only short in limbs, but also arched, so when they are on land, they will crawl slowly with their bellies close to the ground. Crocodiles with long legs are different. They can run fast on the ground like dogs. Legend: The recovery mode of the farmer crocodile is particularly eye-catching. The picture comes from the internet. In the introduction of farmer crocodiles, it is not difficult to see that the body structure of farmer crocodiles is very different from that of today's crocodiles, and this difference comes from their living environment. Peasant crocodiles are completely prehistoric land crocodiles, and they no longer need to adapt to the body structure of aquatic organisms and become flexible and fast land crocodiles. Crocodile fossils living in the dinosaur world were found in the Agang Formation in Brazil, belonging to the late Cretaceous period, which lasted from 90 million years ago to 68 million years ago. Judging from the location where the fossils were found, the farmer crocodile should have lived 90 million to 83 million years ago. Dinosaurs living in the same world as farmer crocodiles include King Kong Dragon, Wind Dragon, Antarctic Dragon, Gondwana Dragon, macaroon and monitor lizard, all of which belong to theropod carnivorous dinosaurs. Legend: In South America in the late Cretaceous, Yellow Star was the place where dinosaurs and other ancient creatures were found. Pictures from network legend: King Kong Dragon, pictures from network legend: Antarctic Dragon, pictures from network legend: Masakali Dragon, pictures from network legend: Jungle Dragon, pictures from network. Crocodiles, farmers who live with dinosaurs, are under great pressure. They had to avoid the hunting of fierce carnivorous dinosaurs and compete with small carnivorous dinosaurs. Small and flexible farmer crocodile wins by speed, can chase prey and compete with dinosaurs for food. The farmer crocodile's diet includes not only all kinds of mollusks, insects, small lizards, but also newborn dinosaurs. Legend: The world where farmers and crocodiles live, the picture comes from the Internet. Judging from the fossils found so far, all kinds of small land crocodiles, including farmer crocodiles, were still very common in Cretaceous South America, which also proved the success of evolutionary strategy and adaptation to the environment. Legend: Many Cretaceous crocodiles were found in the King Kong Formation. The picture came from the network singing a Cretaceous love song. If you think that the peasant crocodile is just a small land crocodile that lived in Cretaceous, then you underestimate it. Paleontologists discovered that it could sing. Legend: The complete skull of the farmer crocodile, the picture comes from the Internet. Because of the preservation of complete skull fossils, paleontologists studied the crocodile specimen of farmer Monti Altug with the number MPMA-68.0003/ 12, and found a special cavity in the pterygoid bone of the skull. Using computed tomography, paleontologists restored the structure of the cavity, and the rest of the nasopharynx was connected. A similar structure was found on the skull of the Ganges crocodile. Crocodiles in Yokogawa can make sounds through the cavity between pterygoid bone and nasopharynx to attract the opposite sex, so can crocodiles in farmers. Paleontologists' research on more skulls of Monti Altug alligators found the difference of cavities, which should be caused by age and gender. Legend: A study of the nasal cavity and pterygoid bone of a farmer crocodile, with pictures from the Internet Legend: A study of the skull proves that a farmer crocodile can make a loud cry, with pictures from the Internet. Think about it, 80 million years ago, in the silent forest of Cretaceous Brazil, a bright cry suddenly broke out. It is the male farmer crocodile who makes the cry. He is singing a Cretaceous love song. References:

1. Iori Yagami; Carvalho, I. S. (20 1 1). Caipirasuchus paulistanus is produced in the Upper Cretaceous (Turo-Santo period) in the Bauru basin of Brazil. Journal of vertebrate paleontology. 3 1 (6): 1255.doi: 10. 1080/02724634.20 1 1.602777。 2. Iori Yagami; Dr. marinho; Carvalho ID card. Campos，A. C. D. A. (20 13)。 "Re-evaluation of the taxonomy of the amphibians in the Jingang Formation in South China in the Late Cretaceous? Sao Paulo, Brazil. " Animal taxa. 3686 (2):183.doi:10.1646/fauna.3686.2.4.3. Pol，d； Nascimento in the afternoon; Carvalho; Ricinine, c; Pires-Domingos; Zahir, H. (20 14). "Physiology of a New Chordata and Higher Chordata in Late Cretaceous in Brazil". PLoS One.9 (4): E93 105。 Pictures/networks (deleted)? Text/Jiang's Microraptor (Jiang Hong)? Typesetting/Ginger's Microraptor?