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Baltic amber

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Title: Baltic amber  
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Subject: List of prehistoric insects, 2011 in paleontology, Eocene, Deinodryinus velteni, Palaeovespa
Collection: Amber, Baltic Amber, Eocene, Geology of Lithuania, Oligocene, Paleontological Sites of Europe
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Baltic amber

Different colours of Baltic amber.
Typical beach sand on the Baltic Sea where amber is often washed up.
Fishing for amber at the seacoast, Mikoszewo, close to Gdańsk, Poland.

The Baltic region is home to the largest known deposit of amber, called Baltic amber or succinite. It dates from 44 million years ago (Eocene).[1] It has been estimated that these forests created over 105 tons of amber.[2]

The term Baltic amber is generic, so amber from the Bitterfeld brown coal mines in Saxony (Eastern Germany) goes under the same name. Bitterfeld amber was previously believed to be only 20–22 million years old (Miocene), but a comparison of the animal inclusions revealed that it is most probably genuine Baltic amber that has only been redeposited in a Miocene deposit.[3] Other sources of Baltic Amber have been listed as coming from Poland and Russia.

Because Baltic amber contains about 8% succinic acid, it is also termed succinite.

It was thought since the 1850s that the resin that became amber was produced by the tree Pinites succinifer, but research in the 1980s came to the conclusion that the resin originates from several species. More recently it has been proposed, on the evidence of Fourier-transform infrared microspectroscopy (FTIR) analysis of amber and resin from living trees, that conifers of the family Sciadopityaceae were responsible.[2] The only extant representative of this family is the Japanese umbrella pine, Sciadopitys verticillata.

Numerous extinct genera and species of plants and animals have been discovered and scientifically described from inclusions in Baltic amber.[4] Baltic amber includes the most species-rich fossil insect fauna discovered to date.

Contents

  • Paleobiology 1
    • Fauna 1.1
  • See also 2
  • References 3

Paleobiology

Numerous organisms have been described from amber specimens including:

Fossil Brentidae beetle

Fauna

See also

References

  1. ^ Ritzkowski, S. (1997). "K-Ar-Altersbestimmungen der Bernsteinführenden Sedimente des Samlandes (Paläogen, Bezirk Kaliningrad)". Metalla (Bochum) 66 (Sonderheft): 19–23. 
  2. ^ a b Wolfe, A. P.; Tappert, R.; Muehlenbachs, K.; Boudreau, M.; McKellar, R. C.; Basinger, J. F.; Garrett, A. (2009). "A New Proposal Concerning the Botanical Origin of Baltic Amber".  
  3. ^ Dunlop, J. A.; Giribet, G. (2003). "The first Fossil Cyphophthalmid (Arachnida: Opiliones), from Bitterfeld Amber, Germany". Journal of Arachnology 31 (3): 371–378.  
  4. ^ Weitschat, W.; Wichard, W. (2002). Atlas of Plants and Animals in Baltic Amber. Pfeil.  
  5. ^ a b Wheeler, W. M. (1914). "The Ants of the Baltic Amber". Schriften der Physikalisch-Ökonomischen Gesellschaft zu Königsberg 55 (4): 56–59. 
  6. ^ a b c Heterick, B. E.; Shattuck, S. (2011). "Revision of the Ant Genus Iridomyrmex (Hymenoptera: Formicidae)". Zootaxa 2845: 169. 
  7. ^ a b c d Gibson, G. A. P. (2009). "Description of three New Genera and four New Species of Neanastatinae (Hymenoptera, Eupelmidae) from Baltic Amber, with Discussion of their Relationships to Extant Taxa". ZooKeys 20: 175–214.  
  8. ^ a b Engel, M. S. (1995). "A New Fossil Snake-Fly Species from Baltic Amber (Raphidioptera: Inocelliidae)". Psyche 102 (3–4): 187–193.  
  9. ^ Skalski, A. W. (1973). gen. et sp. nov. (Oecophoridae) and a Tineid-Moth Discovered in the Baltic Amber"Epiborkhausenites obscurotrimaculatus"Studies on the Lepidoptera from Fossil Resins. Part II. . Acta Palaeontologica Polonica 18 (1): 153–160. 
  10. ^ a b c Kehlmaier, C; Dierick, M; Skevington, JH (2014). "Micro-CT studies of amber inclusions reveal internal genitalic features of big-headed flies, enabling a systematic placement of Metanephrocerus Aczel, 1948 (Insecta: Diptera: Pipunculidae)". Arthropod Systematics & Phylogeny 72 (1): 23–36. 
  11. ^ Cockerell, T. D. A. (1906). "Fossil Hymenoptera from Florissant, Colorado". Bulletin of the Museum of Comparative Zoology 50 (2). 
  12. ^  
  13. ^ Stworzewicz, E.; Pokryszko, B. M. (2006). "Eocene Terrestrial Snails (Gastropoda) from Baltic Amber".  
  14. ^ Poinar, G. Jr. (2000). "Fossil Onychophorans from Dominican and Baltic Amber: Tertiapatus dominicanus n.g., n.sp. (Tertiapatidae n.fam.) and Succinipatopsis balticus n.g., n.sp. (Succinipatopsidae n.fam.) with a Proposed Classification of the Subphylum Onychophora". Invertebrate Biology 119 (1): 104–9.  
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