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1by Jakobs, ,Giselle Kathleen“...Toarcian ammonite collections from British Columbia, Nevada, Oregon, the Yukon, and Alaska form...”
Published 1992
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2by Jakobs“...Toarcian ammonite collections from British Columbia, Nevada, Oregon, the Yukon, and Alaska form...”
Published 2008
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3Published in Philosophical Transactions of the Royal Society of London. Series B, Biological Sciences (1954)“...The Bajocian (Middle Jurassic) ammonites of Western Australia are described on the basis...”
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4by Alsen, Peter“...ammonites, Boreal, Tethys, bed-by-bed collection, Valanginian, Wollaston Forland, East Greenland...”
Published 2001
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5Subjects: “...Ammonite occurrences...”
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12“...The ammonite sequence in the Middle Jurassic of central East Greenland is the most complete...”
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13by John H. Callomon“..., are the Subzones widely used in the Jurassic, thanks to that System's exceptional guide-fossils, its ammonites...”
Published 1994
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14by Mcdina, Francisco A., Riccardi, Alberto C., Ghiglione, MatiasGet access
Published in Alcheringa: An Australasian Journal of Palaeontology (2003)
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16“...The occurrence of the heteromorph ammonite genus Hemiptychoceras Spath is reported for the first...”
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18“... Eotriassic ammonites at three localities on the south side of Gael Hamkes Bay, on the East Coast of Greenland...”
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