Significant δ44/40Ca variations between carbonate- and clay-rich marine sediments from the Lesser Antilles forearc and implications for mantle heterogeneity

Gerald Handerson Thayer (1883–1939) was an artist, writer and naturalist who worked in North and South America, Europe and the West Indies. In the Lesser Antilles, Thayer made substantial contributions to the knowledge and conservation of birds in St Vincent and the Grenadines. Thayer observed and collected birds throughout much of St Vincent and on many of the Grenadines from January 1924 through to December 1925. Although he produced a preliminary manuscript containing interesting distributional notes and which is an early record of the region's ornithology, Thayer never published the results of his work in the islands. Some 413 bird and bird egg specimens have survived from his work in St Vincent and the Grenadines and are now housed in the American Museum of Natural History (New York City) and the Museum of Comparative Zoology (Cambridge, Massachusetts). Four hundred and fifty eight specimens of birds and eggs collected by Gerald and his father, Abbott, from other countries are held in museums in the United States.

Download Full-text

The large superpredators’ teeth from Middle Triassic of Poland

Contemporary Trends in Geoscience ◽

10.2478/ctg-2014-0013 ◽

2013 ◽

Vol 2 (1) ◽

pp. 91-94 ◽

Cited By ~ 1

Author(s):

Dawid Surmik ◽

Tomasz Brachaniec

Keyword(s):

Marine Sediments ◽

Middle Triassic ◽

Morphological Features ◽

Marine Reptiles

ABSTRACT An unusual large teeth, finding from time to time in marine sediments of Muschelkalk, Silesia, Poland indicate the superpredators occurrence. According to size and morphological features the teeth are similar to archosaurs or giant marine reptiles.

Download Full-text

Application of integrated sequence stratigraphic techniques in non-marine/marginal marine sediments; an example from the Upper Talang Akar Formation, offshore northwest Java

10.29118/ipa.1328.145.159 ◽

2018 ◽

Author(s):

C. Suria

Keyword(s):

Marine Sediments ◽

Sequence Stratigraphic

Download Full-text

Some centric diatoms (Bacillariophyta) from Neogene deposits of the Fisher Massif (Prince Charles Mountains, East Antarctica)

Novosti sistematiki nizshikh rastenii ◽

10.31111/nsnr/2011.45.32 ◽

2011 ◽

Vol 45 ◽

pp. 32-49

Author(s):

R. M. Gogorev ◽

Z. V. Pushina

Keyword(s):

Marine Sediments ◽

East Antarctica ◽

Benthic Diatoms ◽

Detailed Data ◽

Planktonic Algae ◽

Centric Diatoms ◽

Planktonic Diatom ◽

Oceanic Species ◽

Diatom Complexes

The richest diatom complexes have revealed due to the study of glacial-marine sediments sampled in the Fisher Massif (Prince Charles Mountains, East Antarctica) during 52nd and 53rd Russian Antarctic Expeditions (Polar Marine Geol. Survey Expedition) in 2006/07 and 2007/08. Three diatom complexes are distinguished according to different palaeoecological conditions: the planktonic one is located in the basis of the outcrop, while mixed planktonic-benthic and benthic ones being located above. The planktonic diatom complexes are dominated by two oceanic species Actinocyclus ingens (up to 8%) and Denticulopsis simonseni (up to 80%). There are 15 planktonic algae, e. g. Eucampia аntarctica, Fragilariopsis spp., Rhizosolenia spp., Rouxia antarctica, Podosira antarctica sp. nov., Stellarima microtrias; and also unknown and non-described benthic diatoms Achnanthes sp., Cocconeis spp., Rhabdonema (s. l.) spp. and Synedra (s. l.) spp. Detailed data on morphology and taxonomy of 10 centric diatoms are presented, including 3 newly described species.

Download Full-text