四千万年前还是一片汪洋大海的地区如今是什么样子呢?答案是一片沙漠。很少有人能想到,如今黄沙遍野的上埃及地区曾充满海水,曾是鲸鱼的乐园。 1 _+ x" s) [. t$ Q ^1 G/ E
Its name in Arabic is Wadi Hitan but it is known as the Valley of the Whales.3 k$ i- N# J4 o9 y- r. V9 G
% o) H( T: s+ O) M For years palaeontologists have been unearthing a remarkable collection of whale fossils, all the more surprising because the area is now inland desert in upper Egypt.
1 W2 ~8 t. e |$ t8 U : j( A' R5 g8 |' e8 p2 y3 i
It is believed that about 40 million years ago the area was submerged in water, part of the Tethys Sea. As the sea retreated north to the Mediterranean it left a series of unique rock formations and also a cornucopia of fossils.
; J. _( J9 D% {( |6 f( N ) G( N! U+ H/ b! ]
One of the most exceptional finds was a 37 million-year-old whale from the species Basilosaurus isis, unearthed by a team led by Prof Philip Gingerich of the University of Michigan in the United States.
' L5 Z" o& G, K" s: f6 u. P! ?7 M
, @3 R8 t# z& ?3 Z But now it has become the subject of a bizarre customs wrangle at Cairo airport.
; X' t: w# H8 l# n% i$ C% [" a9 C
; X5 t7 y7 ~; i, L; b7 Y Prof Gingerich explained that this was the only complete specimen from this species of whale.7 x% `- P; w8 p& d# O- q$ ~
3 f+ m' K" r) _* z' b
It provides evidence of how whales evolved from being land-based creatures to go back into the sea - a reverse of the usual evolutionary process.- S9 F( q5 }" l& \
& j; p3 k0 x1 g
Basilosaurus isis retained tiny feet, a useless reminder of its evolution from land animal to sea-dweller.
X' v2 E* w/ T) s. w3 S8 D
+ [$ ~8 i+ [" U" p The limbs are human sized, even though the creature is 15m-16m long.% ?2 q3 l5 x# L4 \3 Y/ r0 X
% S: m' x/ ~5 x; P3 A A6 Z* `4 ~
For the past two years Prof Gingerich and his team have been painstakingly reassembling the skeleton back in Michigan. It is now being returned to Egypt for a new museum, planned for the Valley of the Whales.
+ o1 h8 }0 v$ B. F/ @$ |* W " h8 A/ v1 h2 ?( q8 Q6 G! p( X
But according to the Egyptian media the whale skeleton is stuck at Cairo airport.
& e- n j9 ?+ S+ {$ Y
: R6 I' V: y" Y Customs agents are demanding a $40,000 fee.
) W- J {/ V0 b9 P( k # d% d& u1 D/ C: L$ G
It is not clear how they came to that figure as prehistoric fossils have no agreed market value.
, `, [" l/ w. J8 T
7 Q* b" H% w7 j In any case the Egyptian authorities who are importing the fossil are refusing to pay.: v5 s) u7 T: k% r( x
: B4 D8 b: [; C3 V% I3 B A senior official from the ministry of tourism has warned that the issue needs to be resolved speedily, otherwise it could cause a "big scandal" for Egypt, he said.
' p* G& |; C/ `" D- ]/ R; a 3 @$ n3 ?3 r" z: b- z0 z9 c
Prof Gingerich joked that it had taken two-and-a-half years to be allowed to export the fossil to the United States, and it could take another two-and-a-half years to get it back. |