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Properties and dimensional stability of 12 500-year-old subfossil pine wood

100%

Fejfer M., Zborowska M., Adamek O., Dzieduszynska D., Kittel P., Petera-Zganiacz J., Twardy J.

Drewno. Prace Naukowe. Doniesienia. Komunikaty

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2014

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tom 57

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nr 193

At the Koźmin Las site, in Central Poland, in the middle section of the Warta River valley, a series of well-preserved tree trunks and in situ stumps, as well as organic deposits, have been found. The tree remains are dated back to the period between 13,000–12,600 cal BP, i.e. to the Alleröd/Younger Dryas transition. The forest consisted predominantly of pines (Pinus sylvestris L.) of a maximum age of approx. 140 years and an average age of 68 years, and the river valley floor was overgrown. The forest was destroyed ca. 12,600 cal BP by deteriorating hydrological conditions or a sudden catastrophic event. The aim of the study was to assess the degree of degradation in terms of selected macroscopic, physical and chemical properties of a subfossil pine log. On this basis, a conservation process was developed,using aqueous solutions of polyethylene glycols (PEG) with varying concentrations of low- and high-molecular polymers. Treated and dried samples were comparedin terms of their tangential and radial dimensional stability, as well as their hygroscopic properties.

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Helicopsis striata in the Lower Odra valley

100%

Stepczak K.

Folia Malacologica

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1999

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tom 07

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nr 4

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Late Pleistocene bat fossils from Anjohibe Cave, northwestern Madagascar

100%

Samonds K. E.

Acta Chiropterologica

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2007

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tom 09

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nr 1

In spite of decades of research on Madagascar's unique and endemic modern fauna, the evolutionary history of the island's bat fauna remains largely unknown. Their origin and evolution is largely unknown because of the nature of the fossil record; the deepest well-dated glimpse of Madagascar's mammal groups comes from only 26,000 years ago. Bat remains have frequently been recovered from paleontological sites, but have been rarely identified or described. It therefore remains unknown whether bats underwent a reduction in species diversity similar to that seen in many of Madagascar's vertebrate clades. Herein I describe a collection of newly discovered subfossil bats from Anjohibe Cave, northwestern Madagascar, some estimated to have been deposited about 80,000 years ago. Five bat genera are represented as subfossil (Rousettus, Eidolon, Hipposideros, Triaenops, and Myotis) with four of these genera present in Anjohibe Cave today. The subfossil material has yielded two new species, indicating that Malagasy bats experienced recent species turnover, paralleling what is seen in much of the island's terrestrial vertebrate fauna.

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Fossil and subfossil bird remains from five Austrian caves

100%

Bochenski Z., Tomek T.

Acta Zoologica Cracoviensia

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1994

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tom 37

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nr 1

5

The archaeological record of domesticated and tamed birds in Sweden

80%

Tyrberg T.

Acta Zoologica Cracoviensia

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2002

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tom 45

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nr Spec.issue

Ograniczanie wyników

2 Acta Zoologica Cracoviensia

1 Acta Chiropterologica

1 Drewno. Prace Naukowe. Doniesienia. Komunikaty

1 Folia Malacologica

1 Adamek O.

1 Bochenski Z.

1 Dzieduszynska D.

1 Fejfer M.

1 Kittel P.

1 Petera-Zganiacz J.

1 Samonds K. E.

1 Stepczak K.

1 Tomek T.

1 Twardy J.

1 Tyrberg T.

1 Zborowska M.

1 2014

1 2007

1 2002

1 1999

1 1994

Properties and dimensional stability of 12 500-year-old subfossil pine wood

Helicopsis striata in the Lower Odra valley

Late Pleistocene bat fossils from Anjohibe Cave, northwestern Madagascar

Fossil and subfossil bird remains from five Austrian caves

The archaeological record of domesticated and tamed birds in Sweden