Cenozoic Pectinids of Alaska, Iceland, and Other Northern Regions By F. STEARNS MAcNEIL GEOLOGICAL SURVEY PROFESSIONAL PAPER 553 Evolution of indigenous Alaskan pectinid stocks, of migrant stocks from other areas in the Pac$c region, and of boreal Pacific species that subseyuently migrated to the Arctic and northern Atlantic regions UNITED STATES GOVERNMENT PRINTING OFFICE, WASHINGTON : 1967 UNITED STATES DEPARTMENT OF THE INTERIOR STEWART L. UDALL, Secretary GEOLOGICAL SURVEY William T. Pecora, Director Library of Congress catalog-card No. QS 65321 For sale by the Superintendent of Documents, U.S. Government Printing Office Washington, D.C. 20402 - Price $1.00 (paper cover) CONTENTS Page Systematic paleontology-Continued 1 Genus Chlamys Roedingdontinued Introduction--------------------------------------- 1 Subgenus Chlamys Roeding-Continued Page Pectinidae as guide fossils---- -- --- - - -- - -- - --- - -- - -- - - 1 Group of C. (C.) rubida (Hinds)---------- 21 Pectinidae of Alaska- - .............................. 2 Chlamys (Chlamys) rubida (Hinds)---- 2 1 Migration routes------------------------------------ 3 Chlamys (Chlamys) rubida jordani (Ar- Systematic concept- - - - - - -- -- -- --- - -- - - - -- -- - --- --- - 4 nold)---------------------------- Systematic paleontology- - -- -- - - - - - - - - - - --- - --- - -- -- - 5 Chlamys (Chlamys) rubida hindsii (Car- Genus Delectopecten Stewart--- ----- - ---- -- - --- --- 5 penter)-------------------------- Delectopectzn maddreni MacNeil, n. sp- -------- 5 Chlamys (Chlamys) cf. C. (C.) rubida Genus Polynemamussium Habe ------------------- 6 hindsii (Carpenter)--------_------- Polynemamussium alaskense (Dan)---- --- - - - -- 6 Chlamys (Chlamys) rubida prerubida Polynemamussium davidsoni (Dall)--- - - - - - - - - - 7 MacNeil, n. subsp ---------------- Genus Arctinula Thiele- -- -- --- - - - -- -- -- - --- -- - -- 7 Group of C. (C.) beringiana (Middendoril)- - Arctinula groenlandica (Sowerby)- - - - _ - - - - - - - - 8 Chlamys (Chlamys) beringiana (Mid- Genus Chlamys Roeding ......................... 8 dendorff)------------------------ Subgenus Leochlamys MacNeil, n. subgen- - - - - - 9 Chlamys (Chlamys) beringiana colvillen- Chlamys (Leochlamys) tugidakensis MacNeil sis MacNeil, n. subsp -------------- n.sp-------------------------------- 10 Chlamys (Chlamys) beringiana graui Subgenus Swiftopecten Hertlein- -- -- --- -- --- -- 11 MacNeil, n. subsp ---------------- Chlamys (Swiftopecten) donmilleri MacNeil, Chalmys (Chlamys) beringiana strate- n.sp-------------------------------- 12 gus (Dall)........................ Chlamys (Swiftopecten) cf. C. (8.) donmilleri Chlamys (Chlamys) beringiana unalas- MacNeil-- - - - - - - - - - - - - - - - - - - - - - - - - - - - 13 kae MacNeil, n. subsp ------------- Chlamys (Swiftopecten) sp --------------- 13 Chlamys (Chlamys) wainwrightensis Chlamys (Swiftopecten) swifti kindlei (Dall)- 13 MacNeil, n. sp ------------------- Subgenus Chlamys Roeding- - - -----------_--_ 13 Group of C. (C.) picoensis (Waterfall)- - - - - Group of C. ("C.") hastata (Sowerby)- - - - - 14 Chlamys (Chlamys) picoensis (Water- Chlamys ("Chlamys") hastata (Sow- fall)----------------------------- by)----------------------------- 14 Chlamys (Chlamys) cf. C. (C.) picoensis Chlamys ("Chlarnys") hastata hericius chinkopensis Masuda and Sawada- - - (Gould)------------------------- 14 Chlamys (Chlamys) picoensis kino- Chlamys ("Chlamys") pugetensis (Old- shitai Kubota- - royd)_---_ - - - - - - - - - - - - - - - - - - - _- - - - 15 Group of C. (C.) hanaishiensis Masuda- - - - Group of C. ("C.") tauroperstriata Sacco- - - - 15 Chlamys (Chlamys) cf. C. (C.) hanai- Chlamys ("Chlamys") harmeri Altena- _ 15 shiensis Masuda ------------------ Chlamys ("Chlamys") breidavikensis Chlamys (Chlamys) hanaishiensis am- MacNeil, n. sp ------------------- 16 chitkana MacNeil, n. subsp--- - ---- Group of C. ("C.") gloriamaris (Dubois)--- 16 Chlamys (Chlamys) pseudislandica Mac- Chlamys ("Chlamys") tjornesensis Mac- Neil, n. sp ....................... Neil, n. sp ....................... 16 Chlamys (Chlamys) pseudislandica plaj- Group of C. ("C.") cosibensis (Yokoyama)- 17 keri MacNeil, n. subsp- - ---------- Chlamys ("Chlamys") cf. C. ("C.") Chlamys (Chlamys) pseudislandica ar- cosibensis (Yokoyama)- - - - - - - - - - - - 17 conis MacNeil, n. subsp ----------- Chlamys ("Chlamys") coatsi MacNeil, Group of C. (C.) islandica (Miiller)-------- n.sp--------------_------------- 17 Chlamys (Chlamys) islandica islandica Chlamys ("Chlamys") coatsi middle- (Miiller)- - - - - - - - - - - - - - - - - - - - - - - - - tonensis MacNeil, n. subsp -__--_-_- 18 Chlamys (Chlamys) islandica thulensis Chlamys ("Chlarnys") cf. C. ("C.") MacNeil, n. subsp ----------..----- coatsi middletonensis MacNeil----- - - 18 Chlamys (Chlamys) islandica kanagae Chlamys ("Chlamys") chaixensis Mac- MacNeil, n. subsp ----------------- Neil, n. sp ....................... 19 Chlamys (Chlamys) islandica powersi Chlamys ("Chlamys") lioica (Dall)- - - - 19 MacNeil, n. subsp ---------------- Chlamys ("Chlamys") trinitiensis Mac- Chlamys (Chlamys) islandica erythro- Neil, n. sp ....................... 20 comata (Dall)--,----------------- Chlamys ("Chlarnys") aff. C. (l1C.,') Chlamys (Chlamys) islandica albida trinitiensis MacNeil- - ---- --- - -- - -- 2 1 Systematic paleontology--0ontinued Sy~tematicpaleontology-Continued Genus Chlamys Roeding-Continued Page Genus Patinopecten Dall-4ontinued Page Subgenus Chhmys Roeding-Continued Subgenus Lituyapecten MacNeil- - - ----------- 41 Other species assigned to Chlamys---_----.. 36 Patinopecten (Lituyapecten) n. sp---------- 41 Chlamys sp- - - - .................... 36 Subgenus Mizuhopecten Masuda -------------- 41 Chlamys (?) washburnei (Arnold) - - - - - 36 Patinopecten (Mizuhopecten) skonunensis ?Chlamys sp---- - - - - - - - - - - - - - __- - - - - - - 37 MacNeil, n. sp....................... 42 Chlamys? nuwokensis MacNeil---- - -- - 37 Genus Fortipecten Yabe and Hatai ---------------- 42 Genus Vertipecten Grant and Gale- - -------------- 38 Fortipecten mollerensis MacNeil, n. sp- - - ------ 43 Vertipecten lachenbruchi MacNeil, n. sp-- - - --- - 39 Fortipecten hallae (Dal1)- - - ------------------ 44 Vertipecten popofensis MacNeil, n. sp ----- -- - -- 39 Genus Miyagipecten Masuda- .................... 44 Vertipecten n. sp.?- - - - - - - -- - -- - - -- - --- --- -- 40 - Miyagipecten alaskensis MacNeil, n. sp- - -- --- - 45 Genus Patinopecten Dall---------------_---------- 40 . Local~t~es-. - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Subgenus Patinopecten Dall- - ---------------- 41 - - - 45 Patinopecten (Patinopecten) cf. P. (P.) References- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 49 caurinus (Gould) - - - ------------------ 41 Index------------------------------------_-------- 53 ILLUSTRATIONS [Plates follow index] PLATES1-25. Pectinids from- 1. Aleutian Islands, Alaska Peninsula, Katalla district * (Alaska). 2. Alaska Peninsula, Shumagin Islands (Alaska). 3. Alaska Peninsula, Seward Peninsula, Yakataga district (Alaska). 4. Alaska Peninsula, Yakataga district, Malaspina district, Arctic coast (Alaska), Queen Charlotte Islands (British Columbia). 5. Alaska Peninsula, southeastern Alaska, Katalla district (Alaska). 6. Aleutian Islands, Malaspina district, Lituya district, Arctic coast (Alaska), Queen Charlotte Islands (British Columbia). 7. Trinity Islands, Middleton Island, Lituya district (Alaska). 8. Trinity Islands, Middleton Island (Alaska). 9. Trinity Islands, Yakataga district (Alaska). 10. Yakataga district, Lituya district (Alaska). 11. Trinity Islands, Middleton Island, Lituya district (Alaska). 12. Middleton Island (Alaska). 13. Middleton Island (Alaska). 14. Aleutian Islands, Middleton Island (Alaska). 15. Aleutian Islands, Arctic coast (Alaska). 16. Aleutian Islands, Trinity Islands, southeastern Alaska (Alaska). 17. Aleutian Islands (Alaska). 18. Aleutian Islands, southeastern Alaska, Seward Peninsula, Arctic coast (Alaska), Greenland, Iceland. 19. Southeastern Alaska, St. Lawrence Island, Arctic coast (Alaska), Iceland. 20. Aleutian Islands, Alaska Peninsula, Arctic coast, southeastern Alaska (Alaska). 21. Puget Sound (Washington), southeastern Alaska, Pribiloff Islands (Alaska), Okhotsk Sea. 22. Aleutian Islands, Sitkalidak Island off Kodiak, southeastern Alaska (Alaska), California. 23. Arctic coast (Alaska). 24. St. Lawrence Island, southeastern Alaska (Alaska), ?Bering Sea, California, Kurile Islands, Iceland, Netherlands. 25. Iceland. 'Katalla district, Yakataga district, Malaspina district, and Lituya district are west to east in the outcrop of Tertiary rocks bordering the northern Gulf of Alaska. CENOZOIC PECTINIDS OF ALASKA, ICELAND AND OTHER NORTHERN REGIONS ABSTRACT paper contains the first published illustration of the Oligocene to Recent pectinids from Alaska contained in the holotype of Pecten (Chlamys) erythrocmatw Dall collections of the U.S. Geological Survey are herein described from the Okhotsk Sea and the first published photo- and figured. New species from Iceland and the Queen Charlotte graph of the lectcrtype, herein designated, of Pecten is- Islands, British Columbia, and a new subspecies from Greenland landicus var. behringiana Middendorff. An attempt is are included. This paper also contains the first published figure of the holotype of Pecten (Chlarnys) erythrocornatus Dall and made to rectify the nomenclature of northern Pacific the first published photograph of the lwtotype,