Description:
This is a fine example of a rarely-seen bird from the oil shale
Messel Pit deposits of Darmstadt, Germany, known as Messelornis
cristata. Birds are rarely preserved in the fossil record due to
the fragility of their hollow bones. This one is the patronymic
member of a family once thought related to the rails, but now are
thought to have closer affinities to the cranes and bitterns. Interestingly,
only adult specimens have been found, indicating that they probably
nested away from Lake Messel proper, possibly in the surrounding
forests. Other members of the family have been found in France and
North America.
These
~50 million year old deposits are famous for their exceptionally
well-preserved organisms, some of which have the remains of their
last meal preserved within. Soft tissue preservation is a common
event in material from the pit, and that is hinted at here in the
possibly outline of the crest which served to give the species its
name. Interestingly, sometimes the soft tissue outline is preserved
even if the skull bones are not. Due to this fragility of the oil
shale, this specimen, like all from the locality, has been embedded
in resin to allow preparation. The fossil is then flipped over and
the matrix removed on the opposite side. A final coating of resin
serves to preserve the specimen as seen here. This one has had the
back side of the resin and the front portion not bearing bones colored
to more easily bring out the details. I have been told that a water-based
colorant was used, but I did not attempt to remove it. This fine
example is offered at a price far lower than one might expect to
pay for such a rare specimen. Were the skull also present, the price
would easily be doubled. |