Objective- To investigate histological structure of Ostrich skin was done. Ostrich leathers are of exotic leather types, which are in increasing demand due to their outstanding natural gain patterns formed by large feather follicles on the leather surface. Animals-Ten mature ostriches were selected from ostrich breeding center in Jupar, Kerman, Iran, all of which were in good shape and healthy ...

Abtract: The Pliocene locality of Ahl al Oughlam is situated at the southeastern limit of the city of Casablanca, in Morocco, on an ancient seashore of the Atlantic Ocean. It has yielded a very rich vertebrate fauna (macroand micromammals, birds, reptiles, amphibians and fishes) including both terrestrial and marine forms. On the basis of biostratigraphy, the fauna has been dated at about 2.5 M...

Sex chromosome evolution is usually seen as a process that, once initiated, will inevitably progress toward an advanced stage of degeneration of the nonrecombining chromosome. However, despite evidence that avian sex chromosome evolution was initiated >100 Ma, ratite birds have been trapped in an arrested stage of sex chromosome divergence. We performed RNA sequencing of several tissues from ma...