Invertebrate Paleontology Research Articles

The Origin of Life in the Solar System: Current Issues

Brachiopods are (perhaps all too) familiar to any geology student who has taken an invertebrate paleontology course; they may well be less familiar to biology students. Even though brachiopods are among the most significant components of the marine fossil ...Read More

Radar Investigations of Mars, Merrcury, and Titan

Brachiopods are (perhaps all too) familiar to any geology student who has taken an invertebrate paleontology course; they may well be less familiar to biology students. Even though brachiopods are among the most significant components of the marine fossil ...Read More

Modeling the Topographic Evolution of Collisional Belts

Brachiopods are (perhaps all too) familiar to any geology student who has taken an invertebrate paleontology course; they may well be less familiar to biology students. Even though brachiopods are among the most significant components of the marine fossil ...Read More

QUANTUM GEOPHYSICS

Brachiopods are (perhaps all too) familiar to any geology student who has taken an invertebrate paleontology course; they may well be less familiar to biology students. Even though brachiopods are among the most significant components of the marine fossil ...Read More

Aenigmastrophiidae, new family (Brachiopoda, Silurian)

While preparing materials for the pentameroid portion of the Treatise on Invertebrate Paleontology revision of the brachiopod volumes, problems were encountered with four enigmatic genera: Rugolepyros Lenz, 1989; Aenigmastrophia Boucot, 1971; Spondylostrophia Kulkov, 1967; and Stricklandistrophia Sapelnikov and Rukavishnikova, 1975.

Geomorphology and In-Situ Cosmogenic Isotopes

Brachiopods are (perhaps all too) familiar to any geology student who has taken an invertebrate paleontology course; they may well be less familiar to biology students. Even though brachiopods are among the most significant components of the marine fossil ...Read More

Precambrian History of the West Australian Craton and Adjacent Orogens

Brachiopods are (perhaps all too) familiar to any geology student who has taken an invertebrate paleontology course; they may well be less familiar to biology students. Even though brachiopods are among the most significant components of the marine fossil ...Read More

Mantle and Slab Contributions in ARC Magmas

Brachiopods are (perhaps all too) familiar to any geology student who has taken an invertebrate paleontology course; they may well be less familiar to biology students. Even though brachiopods are among the most significant components of the marine fossil ...Read More

Alice Wilson, First Woman Geologist With The Geological Survey of Canada

Alice Evelyn Wilson (1881-1964) was the first woman to be employed in a professional capacity by the Geological Survey of Canada. Though from an academically gifted family, prolonged ill-health during youth hampered her studies; yet it brought also the interest in geology that was to determine her career. Her researches into the invertebrate palaeontology and stratigraphy of the Palaeozoic strata of eastern Canada were distinguished. Unfortunately, in a male-dominated environment, their value was slow in gaining recognition and Alice's promotions came tardily; nor did she ever gain the professional status that was her due. Only very belatedly, with post-retirement publicity and the naming after her of Alice Wilson Hall in the Geological Survey of Canada's Ottawa headquarters, was the importance of her work to be properly recognized.

SILICATE PEROVSKITE

Brachiopods are (perhaps all too) familiar to any geology student who has taken an invertebrate paleontology course; they may well be less familiar to biology students. Even though brachiopods are among the most significant components of the marine fossil ...Read More

ADVENTURES IN LIFELONG LEARNING

Brachiopods are (perhaps all too) familiar to any geology student who has taken an invertebrate paleontology course; they may well be less familiar to biology students. Even though brachiopods are among the most significant components of the marine fossil ...Read More

Undergraduate Preparation for Graduate Work in Geology

Recently I surveyed geoscience departments with graduate programs to determine the courses required of entering graduate students. At least 50 percent of the respondent institutions require or recommend physical geology, historical geology, structural geology, mineralogy (hand-specimen), petrology (hand specimen), optical mineralogy, igneous and metamorphic petrology, sedimentary petrology, field geology, invertebrate paleontology, and sedimentology and stratigraphy. Geomorphology, geophysics and geochemistry are required or recommended by a somewhat smaller percentage of institutions. Two semesters of calculus, physics and chemistry were required by more than two-thirds of the respondents.

A partial articulated polyplacophoran from the Devonian of Pennsylvania

During the course of field work for the invertebrate paleontology class at Bucknell University, part of an articulated polyplacophoran was discovered. Because these fossils are rare and because there are only two reports of North American Devonian polyplacophorans (Smith and Hoare, 1987), it is felt that this specimen should be described and illustrated.

Pliocene Marine Transgressions of Northern Alaska: Circumarctic Correlations and Paleoclimatic Interpretations

At least three marine transgressions of Piliocene age are recorded by littoral to inner-shelf sediments of the Gubik Formation, which mantles the Arctic Coastal Plain of northern Alaska. The three recognized transgressions were eustatic high sea levels that, from oldest to youngest, are informally named the Colvillian, Bigbendian, and Fishcreekian transgressions. The geochronology is based up amino acid geochemistry, paleomagnetic studies, vertebrate and invertebrate paleontology, and strontium isotope age estimates. Pollen, plant macrofossils, and marine vertebrate and inventebrate remains indicate that these transgressions occurred when the Arctic was at least intermittently much warmer than it is now. The Colvillian transgression took place at sometime between 2.48 and 2.7 Ma, when adjacent coastal areas supported an open boreal forest or spruce-birch-woodland with scattered pine and rare fir and hemlock. The Bigbendian transgression occurred about 2.48 Ma. Climate conditions were probably slightly cooler than during the Colvillian transgression, but probably too warm for permafrost and too warm for even seasonal sea ice in the region. Nearby vegetation was open spruce-birch woodland or parkland, possibly with rare scattered pine. The Fishcreekian transgression took place sometime between 2.14 and 2.48 Ma and was also characterized by warm marine conditions without sea ice. During the waning stages of this transgression, however, terrestrial conditions were relatively cool, and coastal vegetation was herbaceous tundra with scattered larch trees in the vicinity. Other marine units from this time period occur around the Arctic Basin. The three oldest transgressions recognized from the Seward Peninsula may be broadly correlated with the three Piliocene transgresions of the Arctic Coastal Plain. The Tusatuvayam beds in Kamchatka possibly correlate with one of the two younger transgressions of northern Alaska. The non-marine Worth Point Formation of Banks Island may be younger than all three of the transgressions of the Arctic Coastal Plain, and marine sediment of the Beaufort Formation on Meighen Island is slightly older than the Colvillian transgression. None of the Piliocene marine units on Baffin Island can be confidently correlated with the high sea level events of northern Alaska. The upper Kap Kobenhavn Formation and the upper Loden Elv Formation of Greenland most likely correlate with the Fishcreekian transgression. Key words: Arctic, amino acids, Pliocene, Pleistocene, paleoclimate, marine transgressions, sea level, Alaska, Gubik Formation

Adventures In Lifelong Learning

Brachiopods are (perhaps all too) familiar to any geology student who has taken an invertebrate paleontology course; they may well be less familiar to biology students. Even though brachiopods are among the most significant components of the marine fossil ...Read More

The Structure Of Mid-Ocean Ridges

Brachiopods are (perhaps all too) familiar to any geology student who has taken an invertebrate paleontology course; they may well be less familiar to biology students. Even though brachiopods are among the most significant components of the marine fossil ...Read More

Antarctica; A Tale Of 2 Supercontinents

Brachiopods are (perhaps all too) familiar to any geology student who has taken an invertebrate paleontology course; they may well be less familiar to biology students. Even though brachiopods are among the most significant components of the marine fossil ...Read More

Tectonics of the New Guinea Area

Brachiopods are (perhaps all too) familiar to any geology student who has taken an invertebrate paleontology course; they may well be less familiar to biology students. Even though brachiopods are among the most significant components of the marine fossil ...Read More

Untangling the Effects of Burial Alteration and Ancient Soil Formation

Brachiopods are (perhaps all too) familiar to any geology student who has taken an invertebrate paleontology course; they may well be less familiar to biology students. Even though brachiopods are among the most significant components of the marine fossil ...Read More

Rings In The Ocean

Brachiopods are (perhaps all too) familiar to any geology student who has taken an invertebrate paleontology course; they may well be less familiar to biology students. Even though brachiopods are among the most significant components of the marine fossil ...Read More