Issue Date |
09.10.1996 |
ID |
Michel: 117-118;
Scott: 85, 106;
Stanley Gibbons: 113-114;
Yvert: 118-119;
Category: pF
|
Designer |
Anna-Maaret Pitknen-Darmark |
Stamps in set |
2 |
Value |
MK 0,40- Trilobite Asaphus
MK 9,00- Gastropode Euomophalus
should be spelled Euomphalus.
|
Emission/Type |
Definitive.
Valid until 30 June 2002.
|
Issue place |
Mariehamn |
Size (width x height) |
25mm x 45mm |
Layout |
Two Sheets 20 stamp each (4x5) |
Products |
FDC x 1 |
Paper |
|
Gum type |
Mint |
Perforation |
14,75 |
Print Technique |
Offset, multicolor |
Printed by |
The House of Questa |
Quantity |
Trilobite stamp: 800.000
Gastropode stamp: 600.000 |
Issuing Authority |
Aland Posten |
On October 9th, 1996 Post Authority of Aland - Aland Posten -
issued a set of 2 definitive stamps, showing some fossils found on the islands.
On the
Aland islands between
Sweden and
Finland in the Baltic sea, you can find fossils from the
Ordovician period.
This is the only place in Finland where you can find fossils.
These fossils can be seen in University Museum in Helsinki.
East of the main island there is a 9 kilometre diameter crater (Lumparn).
This crater was formed by a meteor or comet impact 1200 to 500 million years ago.
It is possible to go to the Finnish Aland Islands by ferry
from the Swedish or the Finnish mainland.
|
Jomala Island, the best place to look for fossils at Aland,
on stamp of Aland 2011,
MiNr.: 351, Scott: 323
|
The best spot to collect fossils is Yttern's on
Jomala island.
The finds consist of trilobites and gastropods from the Ordovician period.
Some farmers allow tourists to collect fossils from their fields from Ordovician limestone blocks.
Many farmers however do not like collectors and it will soon be illegal to export fossils from
Finland.
The Aland Islands form an archipelago in the Baltic Sea.
They are situated at the entrance to the Gulf of Bothnia and form
an autonomous, demilitarised, monolingual Swedish-speaking region of
Finland.
The first Aland stamps were issued 1 March 1984.
Approximately 15 stamps describing the Aland nature, culture, history, society and
autonomy are issued every year.
Stamps of Aland can be used both for internal and international post services.
The stamps depict two fossils, a gastropod,
Eumophalus, and a trilobite
Asaphus.
|
Asaphus, Ordovician Trilobites on stamps of Aland 1996, MiNr.: 117, Scott: 85.
|
Asaphus is a genus of Ordovician Trilobites.
Trilobites (meaning "three lobes") are a well-known fossil group
of extinct marine arthropods in the class Trilobita.
The first appearance of trilobites in the fossil record defines the base of
the Atdabanian stage of the Early Cambrian period (521 million years ago),
and they flourished throughout the lower Paleozoic era before beginning a drawn-out decline to
extinction when, during the Devonian, all trilobite orders except Proetida died out.
Trilobites finally disappeared in the mass extinction at the end of the Permian about 250
million years ago.
The trilobites were among the most successful of all early animals, roaming the oceans for over 270
million years.
Trilobites had many lifestyles; some moved over the sea-bed as predators,
scavengers or filter feeders and some swam, feeding on plankton.
|
Euomphalus, marine gastropoda on stamp of Aland 1996, MiNr.: 118, Scott: 106.
|
The exoskeleton is composed of calcite and calcium phosphate minerals in a
protein lattice of chitin that covers the upper surface (dorsal) of the
trilobite and curled round the lower edge to produce a small fringe called the "doublure".
Three distinctive tagmata (sections) are present (can be easily seen on the stamp): cephalon (head);
thorax (body) and pygidium (tail).
Euomphalus
is a genus of fossil marine gastropods known to have lived
from the Silurian to the Middle Permian.
The
Gastropoda or gastropods, more commonly known as snails and slugs, are a large
taxonomic class within the phylum Mollusca.
The class Gastropoda includes snails and slugs of all kinds and all sizes from microscopic to large.
There are many thousands of species of sea snails and sea slugs, as well as freshwater snails,
freshwater limpets, land snails and land slugs.
Euomphalus is characterized by a closely coiled shell with a depressed to slightly
elevated spire and a channel-bearing angulation (a selenizone) on the upper surface of the whorls.
The lower surface of the whorls is rounded to angular.
Products and associated philatelic items
Mini-Sheets |
"Gutter Pairs" |
CTO stamps |
|
|
|
|
Several Mini-Sheets of the same stamps were printed in one big sheet,
then cut into "gutter pairs". |
|
|
FDC
(clean and posted from Aland
to Germany) |
First-Day-of-Issue Postmark |
|
|
|
The reverse side is here |
The reverse side is here |
|
References:
Acknowledgements:
-
Many thanks to
Dr. Peter Voice from Department of Geological and Environmental Sciences, Western Michigan University, for reviewing the draft page .
-
Many thanks to "From My Philately"
community of Facebook, for help finding information about these stamps.