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Ye. D. Kalacheva and I. I. Sey
On the genus Tugurites (Ammonoidea)
Journal of Paleontology (January 1977), 51(1):63-67

Index Terms/Descriptors:
Aalenian; Alaska; Ammonoidea; Bajocian; Canada; Cephalopoda; Commonwealth of Independent States; diagnosis; east; Invertebrata; Jurassic; Mesozoic; Middle Jurassic; Mollusca; morphology; Northern Hemisphere; paleontology; revision; taxonomy; Tetrabranchiata; Tugurites; United States; USSR

Latitude & Longitude:
N51°00'00" - N72°00'00" and E173°00'00" - W130°00'00" (Search for maps and images at Alexandria Digital Library)
N42°00'00" - N84°00'00" and W141°00'00" - W52°00'00" (Search for maps and images at Alexandria Digital Library)
N36°00'00" - N82°00'00" and E20°00'00" - W170°00'00" (Search for maps and images at Alexandria Digital Library)

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