BERNSTEIN - DAS GOLD DES NORDENS
AMBER - THE GOLD OF THE NORTH
Flugsaurier-Kopf im Bernstein! - Head of a Pterosaur in amber!
Bernstein bezeichnet den seit Jahrtausenden bekannten und insbesondere im Ostseeraum weit verbreiteten klaren bis undurchsichtigen gelben Schmuckstein aus fossiliem Harz. Damit ist überwiegend nur ein bestimmtes fossiles Harz gemeint, dieser Bernstein im engeren Sinne ist die Bernsteinart mit dem wissenschaftlichen Namen Succinit. Die Bezeichnungen Succinit und Baltischer Bernstein werden oft synonym verwendet, da Succinit den weitaus überwiegenden Teil des Baltischen Bernsteins ausmacht. Die anderen fossilen Harze im Baltischen Bernstein stammen von unterschiedlichen Pflanzenarten und werden auch als „Bernstein im weiteren Sinne“ bezeichnet. Manche kommen mit dem Succinit zusammen vor, z. B. die schon lange aus den baltischen Vorkommen bekannten Bernsteinarten Gedanit, Glessit, Beckerit und Stantienit. Diese werden auch als akzessorische Harze bezeichnet. Andere fossile Harze verschiedener botanischer Herkunft bilden hingegen eigenständige Lagerstätten unterschiedlichen geologischen Alters, wie z. B. der Dominikanische Bernstein und der Libanon-Bernstein. Von der großen Gruppe der Kopale gehören nur die fossilen, aus der Erde gegrabenen Vertreter (z. B. der „Madagaskar-Kopal“) entsprechend der Definition trotz ihres geologisch jungen Alters zu den Bernsteinen. Der älteste bekannte Bernstein stammt aus etwa 310 Millionen Jahre alten Steinkohlen. Seit dem Paläozoikum ist das Harz damaliger Bäume als feste, amorphe (nicht kristalline) Substanz erhalten geblieben. Für die Wissenschaft, insbesondere für die Paläontologie, ist Bernstein mit Einschlüssen, den so genannten Inklusen, von Interesse. Diese Einschlüsse sind Fossilien von kleinen Tieren oder Pflanzenteilen, deren Abdrücke, in seltenen Fällen auch Gewebereste, im Bernstein seit Jahrmillionen perfekt erhalten sind. Schon seit der Steinzeit wurde Bernstein als Schmuck verwendet, und die Römer der Antike wussten den Baltischen Bernstein sehr zu schätzen und nannten ihn "das Gold des Nordens".
Im Bernstein eingeschlossene Trauermücke. / Sciaridae in amber. (Creative Commons)
Amber is fossilized tree resin, which has been appreciated for its color and natural beauty since Neolithic times. Much valued from antiquity to the present as a gemstone, amber is made into a variety of decorative objects. Amber is used in jewelry. It has also been used as a healing agent in folk medicine.There are five classes of amber, defined on the basis of their chemical constituents. Because it originates as a soft, sticky tree resin, amber sometimes contains animal and plant material as inclusions. Amber occurring in coal seams is also called resinite, and the term ambrite is applied to that found specifically within New Zealand coal seams. Fossil resins from Europe fall into two categories, the famous Baltic ambers and another that resembles the Agathis group. Fossil resins from the Americas and Africa are closely related to the modern genus Hymenaea, while Baltic ambers are thought to be fossil resins from Sciadopityaceae family plants that used to live in north Europe. The abnormal development of resin in living trees (succinosis) can result in the formation of amber. Impurities are quite often present, especially when the resin dropped onto the ground, so the material may be useless except for varnish-making. Such impure amber is called firniss. Such inclusion of other substances can cause amber to have an unexpected color. Pyrites may give a bluish color. Bony amber owes its cloudy opacity to numerous tiny bubbles inside the resin. mber is a unique preservational mode, preserving otherwise unfossilizable parts of organisms; as such it is helpful in the reconstruction of ecosystems as well as organisms; the chemical composition of the resin, however, is of limited utility in reconstructing the phylogenetic affinity of the resin producer. Amber sometimes contains animals or plant matter that became caught in the resin as it was secreted. Insects, spiders and even their webs, annelids, frogs, crustaceans, bacteria and amoebae, marine microfossils, wood, flowers and fruit, hair, feathers and other small organisms have been recovered in Cretaceous ambers (deposited ca 130). The oldest amber to bear fossils (mites) is from the Carnian (Triassic, 230 ) of north-eastern Italy. The Romans of the ancient world called the Baltic Amber "the gold of the north".
Eine Ameise im Baltischen Bernstein. / An ant inside Baltic amber. (Creative Commons) - Säugetierhaare / Hair of a mammal (fossilien.de)
Moderkäfer und mehr
|Inkluse(n):||Moderkäfer "Latridiidae", Blattlaus, Mücke|
|Größe der Inkluse(n):||Moderkäfer: ca. 1,3 mm|
|Größe d. Bernsteins:||ca. 36 x 17 x 9 mm|
|Fundort:||Baltikum, Jantarny (ehemals Palmnicken) bei Königsberg/Kaliningrad|
|Alter:||ca. 28 bis 54 Millionen Jahre|
KLEINER FLUSAURIER-KOPF IM KREIDEZEITLICHEN BERNSTEIN!
LITTLE HEAD OF A PTEROSAUR IN CREATACOUS AMBER!
Of course it is preferred to have a full specimen perfectly preserved in Amber and as creatures get larger and larger it becomes harder to expect to find the whole animal in amber so fossil collectors look for parts of animals in the amber. Perhaps the most common animal parts found in amber are feathers and lizard/snake/skink/newt skin. Many bird and animal heads have been found in burmite amber but their condition is often poor with decaying animal fogging the animal often beyond recognition unless special lighting is used. Burmite is a variety of amber. A generally deep red amber from Burma. An amber occurring in the upper Hukong Valley, Burma/Myanmar. Differs from ordinary amber in that it doesn't contain succinic acid. Age: Cretaceous.
The second photo is a close up picture of the pterosaur's beak showing its last supper caught in the spout.
TICKS PARASITISED FEATHERED DINOSAURS
ZECKEN ALS PARASITEN GEFIEDERTER SAURIER
Abstract: Ticks are currently among the most prevalent blood-feeding ectoparasites, but their feeding habits and hosts in deep time have long remained speculative. Here, we report direct and indirect evidence in 99 million-year-old Cretaceous amber showing that hard ticks and ticks of the extinct new family Deinocrotonidae fed on blood from feathered dinosaurs, non-avialan or avialan excluding crown-group birds. A †Cornupalpatum burmanicum hard tick is entangled in a pennaceous feather. Two deinocrotonids described as †Deinocroton draculi gen. et sp. nov. have specialised setae from dermestid beetle larvae (hastisetae) attached to their bodies, likely indicating cohabitation in a feathered dinosaur nest. A third conspecific specimen is blood-engorged, its anatomical features suggesting that deinocrotonids fed rapidly to engorgement and had multiple gonotrophic cycles. These findings provide insight into early tick evolution and ecology, and shed light on poorly known arthropod–vertebrate interactions and potential disease transmission during the Mesozoic.
Picture: Cornupalpatum burmanicum hard tick entangled in a feather. a Photograph of the Burmese amber piece (Bu JZC-F18) showing a semicomplete pennaceous feather. Scale bar, 5 mm. b Detail of the nymphal tick in dorsal view and barbs (inset in a). Scale bar, 1 mm. c Detail of the tick’s capitulum (mouthparts), showing palpi and hypostome with teeth (arrow). Scale bar, 0.1 mm. d Detail of a barb. Scale bar, 0.2 mm. e Drawing of the tick in dorsal view indicating the point of entanglement. Scale bar, 0.2 mm. f Detached barbule pennulum showing hooklets on one of its sides (arrow in a indicates its location but in the opposite side of the amber piece). Scale bar, 0.2 mm
AN AMMONITE TRAPPED IN BURMESE AMBER
Tingting Yu, Richard Kelly, Lin Mu, Andrew Ross, Jim Kennedy, Pierre Broly, Fangyuan Xia, Haichun Zhang, Bo Wang, and David Dilcher
PNAS June 4, 2019 116 (23) 11345-11350; first published May 13, 2019 https://doi.org/10.1073/pnas.1821292116
ABSTRACT: Amber is fossilized tree resin, and inclusions usually comprise terrestrial and, rarely, aquatic organisms. Marine fossils are extremely rare in Cretaceous and Cenozoic ambers. Here, we report a record of an ammonite with marine gastropods, intertidal isopods, and diverse terrestrial arthropods as syninclusions in mid-Cretaceous Burmese amber. We used X-ray–microcomputed tomography (CT) to obtain high-resolution 3D images of the ammonite, including its sutures, which are diagnostically important for ammonites. The ammonite is a juvenile Puzosia (Bhimaites) and provides supporting evidence for a Late Albian–Early Cenomanian age of the amber. There is a diverse assemblage (at least 40 individuals) of arthropods in this amber sample from both terrestrial and marine habitats, including Isopoda, Acari (mites), Araneae (spiders), Diplopoda (millipedes), and representatives of the insect orders Blattodea (cockroaches), Coleoptera (beetles), Diptera (true flies), and Hymenoptera (wasps). The incomplete preservation and lack of soft body of the ammonite and marine gastropods suggest that they were dead and underwent abrasion on the seashore before entombment. It is most likely that the resin fell to the beach from coastal trees, picking up terrestrial arthropods and beach shells and, exceptionally, surviving the high-energy beach environment to be preserved as amber. Our findings not only represent a record of an ammonite in amber but also provide insights into the taphonomy of amber and the paleoecology of Cretaceous amber forests.
Entire thallus of Electrophycus astroplethus in Burmese amber. Arrow shows holdfast. Scale bar = 1.6 mm
George Poinar and Alex E. Brown
A green alga in Burmese amber is described as Electrophycus astroplethus gen. et spec. nov. and tentatively placed in the extant family Chaetophoraceae. The new species is characterised by apical–basal polarity as defined by a holdfast located at the base of the filament cluster, and uniseriate filaments with many attached star-shaped clusters of spines. Reproductive units are produced in the spines. The species is considered to represent a terrestrial aerial alga that quite possibly was growing on the bark of the resin-producing tree. The presence of an oribatid mite (Acari: Oribatida), species of which are known to feed on algae, adjacent to the filaments, supports this view.
Some species of marine algae in the genus Hypnea J. V.Lamouroux, 1812 (Cystocloniaceae) also have forked stellate branches (Dawson 1956). However, the branch structures of these species are easily distinguished from Electrophycus, which is considered a terrestrial aerial species. A terrestrial habitat for the fossil is based on the presence of an oribatid mite larva (Acari: Oribatida) adjacent to the thallus of Electrophycus. Algae are among the various food items of oribatid mites (Schuster 1956; Harding and Stuttard 1974). Several types of reproductive units appear to be developing in the cellular layers lining the walls of the spines. These reproductive units vary in size and shape. While most of the smaller reproductive units probably represent asexual zoospores, some of the larger units could represent gametes. In some cases, the spines contained what appear to be flagellated cells. When mature, the reproductive units may move to the central lumen of the spine, and are expelled thought the broken tip or they remain ‘in situ’ until the spinal walls deteriorate. The fossil is considered to be a terrestrial, aerial species living in a moist tropical habitat, quite possibly attached to the bark of the resin-producing tree. Its ecology may have been similar to that of the terrestrial filamentous green algae, Barranca multiflagellata (Caisová et al.). While quite different structurally from the fossil, B. multiflagellata survives in a volcanic canyon under changing weather conditions (winter rains and summer droughts) (Caisová et al. 2015). Fossil fresh-water algae are well known in sedimentary deposits (Bradley 1929); however, the morphological details in these fossils are not clear and none have the physical features of the amber-entombed E. astroplethus.