New fossil fossil families discovered

A 100 million-year-old fossil fish fossil was discovered in Texas. This is a new species of coelacanth.

This new finfish has been found in Texas. This is the youngest species of finfish discovered, its jaws and its skulls indicate it is a new family - family Dipluridae (double-tailed family) - this family has evolved evolution from two families of finfish. Hand has been known before.

The pieces of this tiny brain found in Fort Worth have been identified as 100 million-year-old bony fins, according to paleontologist John F. Graf, Southern Methodist University (Southern Methodist University - SMU), Dallas.

This finfish is the most distant relative of any animal - up to 400 million years. It is a fish close to the most vertebrate animals, including humans.

The fossil specimen is the first hand-finned fish in Texas dating from the Cretaceous period, Graf said. Graf was the one who identified this fossil. Geological period White chalk lasts from about 146 million years to 66 million years ago. Graf named this new species of finfish Reidus hilli .

Handfin has been found on most continents. This Reidus hilli is the youngest finfish known in the state of Lone Star (another name for Texas).

New fossil fossils were found in Texas

The youngest fossil fossil that dates back to 200 million years in the Triassic period. The Reidus hilli is the first species of hand fin ever identified from the Fort Worth area of ​​Dallas. Fossil fins have been found on most continents except Antarctica. Some fossils have been found in Texas, Graf said.

The finfish has escaped extinction about 400 million years ago. Scientists estimate that pompano has achieved the most diversity during the Triassic period.

People used to think of extinct finfish about 70 million years ago. But that changed when the fish became famous in 1938 after a living specimen was captured on the African coast. Today, it is possible to find finfish swimming in the bottom of the Indian Ocean.

The finfish is the oldest vertebrate we know, Graf said.

The SMU pattern shows that the diversity between handfin species during the Cretaceous is greater than what was previously known.

What makes finfish interesting, is that they are closest to all vertebrate species living on the ground, Graf said. They have the common ancestors closest to all vertebrates.

The bony limbs with bone protrusions support the fins, these bones are precursors to the limbs.

Supporting osteoarthritis in the fins allows a vertebrate marine animal to lift its body off the seabed, which eventually leads to animals that can land. The Texas Reidus hilli is a new species and a new family.

Graff identified Reidus hilli from a part of the skull, including gular plates, where the bones line up under the jaw.

Hand fin fish are not the only species with throat plates, but they are one of the few, Graf said. The truth is, the lens shape of these throat plates is unique to the finfish. That is the first feature that we can identify fossil fish fossils.

The Reidus hilli is a medium-sized adult fish with its time to live. While modern finfish species can grow up to 3m long, the Reidus hilli may not be longer than 40cm. Its small skull is 45mm long and 26mm wide.

The whole body size of the Reidus hilli is characteristic of a new family of finfish, the Dipluridae family, which Graf describes and names. He chose this name for the most primitive handfin, Diplurus, which they live in during the Triassic period. Reidus hilli belongs to the finfish family, the result of the transformation between the two groups of the youngest living fins from the fossil record are Mawsoniidae and Latimeriidae.

The two-tailed finfish are usually smaller than the two closest ones, namely Mawsoniidae and Latimeriidae. Both of these families have members of the Late Cretaceous who reach a large body size, which can be 1 to 3m long.

Reid is a Fort Worth resident who collected fossils for decades. He discovered fossils while walking on some areas that were prepared to build new houses. Reid found fossils lying on the ground where ditches were created by erosion.

According to Graf's analysis, Reid was surprised to learn that he had collected a hand fin fish and that it was a new species.

"When I found it, I could say it was a bone but I didn't think it was anything special," Reid recalls the discovery of the Reidus hilli. "I certainly did not think it was a pelagic fish."