Mexican amber

Polished Amber stones from Simijovel at the Museum of Amber (Museo del Ámbar) in San Cristóbal de las Casas, Chiapas, Mexico

Mexican amber is amber found in Mexico, created during the late Oligocene and Early Miocene epochs of the Cenozoic Era in southwestern North America. As ambers of other origins, it may contain inclusions such as prehistoric insects[1][2][3][4][5] or other arthropods, as well as plant fragments or epiphyllous fungi.[6]

Context

Mexican amber is mainly recovered from fossil bearing rocks in the Simojovel region of Chiapas, Mexico. It is one of the main minerals recovered in the state of Chiapas, much of which is 25 million years old, with quality comparable to that found in the Dominican Republic. Chiapan amber has a number of unique qualities, including much that is clear all the way through and some with fossilized insects and plants. Most Chiapan amber is worked into jewelry including pendants, rings and necklaces. Colors vary from white to yellow/orange to a deep red, but there are also green and pink tones as well. Since pre-Hispanic times, native peoples have believed amber to have healing and protective qualities.
The largest amber mine is in Simojovel, a small village 130 km from Tuxtla Gutiérrez, which produces 95% of Chiapas' amber. Other mines are found in Huitiupán, Totolapa, El Bosque, Pueblo Nuevo Solistahuacán, Pantelhó and San Andrés Duraznal. According to the Museum of Amber in San Cristóbal, almost 300 kg of amber is extracted per month from the state. Prices vary depending on quality and color.

The amber dates from between 22.5 million years old, for the youngest sediments of the Balumtun Sandstone and 26 million years old for the oldest La Quinta Formation.

Origin

The amber was produced by either the two extinct leguminous tree Hymenaea mexicana or Hymenaea allendis, both of which were initially described from fossil flowers included in Mexican amber.[7]

Fossil inclusions

Piece of amber with scorpion as seen through magnifying glass at the Museum of Amber in San Cristobal de las Casas, Chiapas, Mexico

The Tityus apozonalli scorpion holotype fossil is composed of a very complete adult male recovered from the Guadalupe Victoria site.[8] The amber dates from between 23 million years old at the oldest and 15 million years at the youngest. The Guadalupe Victoria site is an outcrop of amber bearing strata belonging to the Mazantic Shale and Balumtum Sandstone. The deposits preserve a transitional river or stream environments near the coast and preserves fossils of a mangrove forest ecosystem.[8]

Asteromites mexicanus is an epiphyllous coelomycetes fungus species recovered on a petal.[6]

Arthropod species

References

  1. ↑ De Andrade, M. L. (1995). "The ant genus Aphaenogaster in Dominican and Mexican amber (Amber Collection Stuttgart: Hymenoptera, Formicidae. IX: Pheidolini)". Stuttgarter Beitrage zur Naturkunde (B) 223: 1–11.
  2. ↑ Engel, MS; Grimaldi, DA (2007). "The neuropterid fauna of Dominican and Mexican amber (Neuropterida, Megaloptera, Neuroptera)". American Museum Novitates 3587: 1–58. doi:10.1206/0003-0082(2007)3587[1:TNFODA]2.0.CO;2.
  3. ↑ Jennings, J.T.; Krogmann, L.; Mew, S. (2012). "Hyptia deansi sp. nov., the first record of Evaniidae (Hymenoptera) from Mexican amber" (PDF). Zootaxa 3349: 63–68.
  4. ↑ Krishna, K.; Emerson, A. E. (1983). "A New Fossil Species of Termite from Mexican Amber, Mastotermes electromexicus (Isoptera, Mastotermitidae)" (PDF). American Museum Novitates 2767: 1–8.
  5. ↑ Solórzano Kraemer, M. M.; Mohrig, W. (2007). "Schwenckfeldina archoica sp. nov. (Diptera, Sciaridae) from the middle Miocene Mexican amber" (PDF). Alavesia 1: 105–108.
  6. 1 2 Coelomycetes in Dominican and Mexican amber. Poinar G Jr, Mycol Res., January 2003, volume 107 (Pt 1), pages 117-122, PubMed
  7. ↑ Calvillo-Canadell, L.; Cevallos-Ferriz, S.R.S.; Rico-Arce, L. (2010). "Miocene Hymenaea flowers preserved in amber from Simojovel de Allende, Chiapas, Mexico". Review of Palaeobotany and Palynology 160 (3-4): 126–134. doi:10.1016/j.revpalbo.2010.02.007.
  8. 1 2 Riquelme, F.; Villegas-Guzmán, G.; González-Santillán, E.; Córdova-Tabares, V.; Francke, O. F.; Piedra-Jiménez, D.; Estrada-Ruiz, E.; Luna-Castro, B. (2015). "New Fossil Scorpion from the Chiapas Amber Lagerstätte". PLoS ONE 10 (8): 1–20. doi:10.1371/journal.pone.0133396.

External links

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