Occurrence of Attributes in Original Text

The text related to the cultural heritage 'Wadi Al-Hitan (Whale Valley)' has mentioned 'Fossil' in the following places:
Occurrence Sentence Text Source
The first fossil skeletons of whales were discovered in the winter of 1902xe2x80x9303.
Continuing interest coincided with the site being visited by fossil collectors, and many bones were removed, prompting calls for the site to be conserved.
The strata in Wadi Al-Hitan belongs to Middle Eocene era and it contains extensive mass of vertebrate fossil within 200xc2xa0km2 (77xc2xa0sqxc2xa0mi).
Wadi Al-Hitan (Whale Valley) is unusual in having such a large concentration of fossil whales (1500 marine vertebrate fossil skeletons) in a relatively small area.
Fossil reptiles are represented by fossils of crocodiles and sea turtles, and bones of sea snakes have also been recorded.
Fossil shells are not common in the main whale-bearing rocks, but are very common in other rocks; many fallen rocks can be seen to be full of a wide variety of fossil shells.
Some fossil seagrasses are also known.
In addition, a wider part of the Wadi El-Rayan Protected Area is included in the property, including the immediate landscape surrounding the fossil sites, areas of scenic interest, and areas which provide visitor access and facilities.
Amongst the key management issues are the protection, conservation and encouragement of well-managed research in relation to the fossil remains and the associated geological values, to international standards of best practice.