Suchergebnisse - Ludvigsen, Rolf

Upper Cambrian to Lower Ordovician conodont biostratigraphy and biofacies, Rabbitkettle Formation, District of Mackenzie

von Landing, Ed, Ludvigsen, Rolf, Bitter, Peter H. von

Silurian trilobites from the northern Yukon Territory

von Ludvigsen, Rolf, Tripp, Ronald P.

A tribolite zonation of middle ordovician rocks, southwestern District of Mackenzie

von Ludvigsen, Rolf

Silicified Late Ordovician trilobites from the Mackenzie Mountains, Northwest Territories, Canada

von Hunda, Brenda R. 1974-, Chatterton, Brian 1943-, Ludvigsen, Rolf

Upper steptoean (Upper Cambrian) trilobites from the McKay Group of Southeastern British Columbia, Canada

von Chatterton, Brian 1943-, Ludvigsen, Rolf

Mid-Cambrian trilobites from the lowest part of the Cow Head Group, western Newfoundland

von Young, Graham A., Ludvigsen, Rolf

Sunwaptan (Upper Cambrian) trilobites of the Cow Head Group, western Newfoundland, Canada

von Ludvigsen, Rolf, Westrop, Stephen R., Kindle, Cecil H.

Franconian trilobites of New York State

von Ludvigsen, Rolf

Upper cambrian and lower Ordovician trilobite biostratigraphy of the Rabbitkettle formation, Western district of Mackenzie

von Ludvigsen, Rolf

The Ordovician trilobite Pseudogygites kobayashi in Eastern and Arctic North America

von Ludvigsen, Rolf

A trilobite zonation of Middle Ordovician rocks, southwestern District of Mackenzie

von Ludvigsen, Rolf

The trilobites bathyurus and eomonorachus from the Middle Ordovician of Oklahoma and their biofacies significance

von Ludvigsen, Rolf

Life in stone: a natural history of British Columbia's fossils

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