Due to a coincidence, the author accidentally obtained a fossil many years ago, but did not mind at first, thinking it was just a stalactite . But it is not regarded as a bonsai, just idle corners. After
, I often see its characteristics unintentionally, which are different from the details and colors of limestone stalactites. Then, if you look closely, Fang Wu is a fossil of a large animal, probably a fossil of a dinosaur limb.
But I dare not be completely sure, because the author has no archaeological experience, and the knowledge of fossils is very poor. I have only played with dinosaur eggs .
I know only Human Anatomy . I spent a few hours in the dissection room of the medical school when I was young. Have an understanding of body structure.
as shown in the figure, the length is 800mm, and the width is 400mm. The appearance is similar to the lower limbs of large animals.
There are two half-exposed egg-shaped structures, as shown in the figure. The egg on the right is missing and you can see the circular hierarchy in the egg. The egg on the left is relatively intact and has scratches on its surface. The long diameter of the egg is about 120mm, and the short diameter is about 90mm. Eggs of this size are rare.
The size of the egg is like an ostrich egg, but the ostrich egg is longer and thinner, with a ratio of length to short diameter, about 3 to 2.
The bottom of the egg, the last part of the suspected limb structure. It has a scaly appearance and a fibrous structure of subcutaneous muscles.
There are multiple cavities of different sizes in the incomplete cross section of the limb.
The cavity is the hollow tube structure of the bone,Analogous to the human limbs, there is a strip of bone in the upper part: humerus or femur. There are two side-by-side strip bones in the lower segment: ulna, radius or tibia, and fibula.
The position and number of bones are classified according to the animals, and they are roughly the same kind.
The cavity is surrounded by soft tissue. That is, muscle fibers and fat outside the bones.
has a spongy vacuole structure, which is regarded as a fossil soft tissue of a somatic animal.
There are indications already clear, with animal anatomy of many other features . The cave stalactites are by no means comparable to karst landforms.
The environment in which fossils are generated is covered by volcanic ash, terrestrial deposits, and ocean deposits, so there are three phases. This fossil should be a continental deposit.
Existing large animals, fertile on land, and oviparous in ocean. Dinosaurs are mostly terrestrial, but they are oviparous . Archaeopteryx evolved from small pterosaurs. Nowadays, bird animals are still oviparous. ovoviviparous indicates that viviparous evolved from oviparous.
Fossils can peel off sedimentary inclusions to show the original appearance of the fossils. This fossil has not been stripped.
I posted this post today, but I didn’t think about it. I hope I am a scholar of paleontology and archaeology, geology expert, and I don’t hesitate to enlighten me to broaden my knowledge and spread culture. Please don't bother those who are inexperienced!
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