. Smithsonian miscellaneous collections . (Publication 4085) CITY OF WASHINGTON PUBLISHED BY THE SMITHSONIAN INSTITUTION AUGUST 6, 1952 SMITHSONIAN MISCELLANEOUS COLLECTIONSVOLUME 119, NUMBER 1 Cljarless ©. anb JHarj> ^aux OTalcotti^esiearci) Jf unb CAMBRIAN STRATIGRAPHY AND PALEONTOLOGY NEAR CABORCA, NORTHWESTERN SONORA, MEXICO (With 31 Plates) BY G. ARTHUR COOPER A. R. V. ARELLANO J. HARLAN JOHNSON VLADIMIR J. OKULITCH ALEXANDER STOYANOW CHRISTINA LOCHMAN. (Publication 4085) CITY OF WASHINGTON PUBLISHED BY THE SMITHSONIAN INSTITUTION AUGUST 6, 1952 Z^t Botb (g>afttntov< (pr<et« B
. Smithsonian miscellaneous collections . (Publication 4085) CITY OF WASHINGTON PUBLISHED BY THE SMITHSONIAN INSTITUTION AUGUST 6, 1952 SMITHSONIAN MISCELLANEOUS COLLECTIONSVOLUME 119, NUMBER 1 Cljarless ©. anb JHarj> ^aux OTalcotti^esiearci) Jf unb CAMBRIAN STRATIGRAPHY AND PALEONTOLOGY NEAR CABORCA, NORTHWESTERN SONORA, MEXICO (With 31 Plates) BY G. ARTHUR COOPER A. R. V. ARELLANO J. HARLAN JOHNSON VLADIMIR J. OKULITCH ALEXANDER STOYANOW CHRISTINA LOCHMAN. (Publication 4085) CITY OF WASHINGTON PUBLISHED BY THE SMITHSONIAN INSTITUTION AUGUST 6, 1952 Z^t Botb (g>afttntov< (pr<et« BALTIMORE, MO., U. S. A. CONTENTS Page Introduction and Stratigraphy, by G. Arthur Cooper and A. R. V. Arellano i Localities 2 Proveedora Hills (locality 8oi) 2 Canedo Hill (locality 812) 9 Prieto Hill (locality 809) 10 Difuntos Hills (locality 802) 12 Buelna Hills (locality 807) 12 Lista Blanca (locality 811) 13 Arrojos Hills (locality 800) 13 Additional localities of Cambrian rocks 15 Summary of Cambrian stratigraphy and correlation between 16 Localities and faunal lists 18 GiRVANELLA, by J. Harlan Johnson 24 Systematic description 24 References 25 Pleospongia, by Vladimir J. OkuHtch 2.] List of species 2^ Systematic description 28 References 34 Brachiopoda, by G. Arthur Cooper 36 Introduction 36 Description 37 References 48 The Original Collection of Cambrian Trilobites from Sonora, by Alexander Stoj^anow 49 Introduction 49 Description 5
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Keywords: ., bookcentury1800, bookdecade1860, bookidsmiths, booksubjectscience
