tf88 sapa
954000₫
tf88 sapa Medullary bone tissue (endosteally derived, ephemeral, mineralization located inside the medulla of the long bones in gravid female birds) has been reported in at least one ''Allosaurus'' specimen, a shin bone from the Cleveland-Lloyd Quarry. Today, this bone tissue is only formed in female birds that are laying eggs, as it is used to supply calci to shells. Its presence in the ''Allosaurus'' individual has been used to establish sex and show it had reached reproductive age. However, other studies have called into question some cases of medullary bone in dinosaurs, including this ''Allosaurus'' individual. Data from extant birds suggested that the medullary bone in this ''Allosaurus'' individual may have been the result of a bone pathology instead.
- Hàng tồn kho:2654
- Loại:so xo miền bắc
- Thẻ:ppfebsco sunwin
Mô tả sản phẩm
tf88 sapa Medullary bone tissue (endosteally derived, ephemeral, mineralization located inside the medulla of the long bones in gravid female birds) has been reported in at least one ''Allosaurus'' specimen, a shin bone from the Cleveland-Lloyd Quarry. Today, this bone tissue is only formed in female birds that are laying eggs, as it is used to supply calci to shells. Its presence in the ''Allosaurus'' individual has been used to establish sex and show it had reached reproductive age. However, other studies have called into question some cases of medullary bone in dinosaurs, including this ''Allosaurus'' individual. Data from extant birds suggested that the medullary bone in this ''Allosaurus'' individual may have been the result of a bone pathology instead.
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