INHS Collections Data

Dataset: INHS-MOLLUSK
Taxa: Physidae
Search Criteria: excluding cultivated/captive occurrences

Page 17, records 1601-1700 of 1872

Illinois Natural History Survey - Mollusk Collection


INHS:MOLLUSK
85352Robert E. DeWalt   1997-06-26
United States, Illinois, Pope, Lusk Creek, 1.82 km NE Waltersburg, North America, 37.38803 -88.54693

INHS:MOLLUSK
85357D.A. McCormick & Mark J. Wetzel   1978-05-02
United States, Illinois, Johnson, Dutchman Creek, 1.5 mi SW Vienna, North America, 37.40289 -88.91832

INHS:MOLLUSK
85359Alison R. Brigham & Lucinda Johnson-Singer   1976-10-01
United States, Illinois, Johnson, Lick Creek, 2 mi W Buncombe, North America, 37.472 -89.01522

INHS:MOLLUSK
85360Mark J. Wetzel   1977-10-11
United States, Illinois, Crawford, Sugar Creek, 2.5 mi NNW Birds, North America, 38.8588313 -87.69207

INHS:MOLLUSK
85361Lan R. Richart & Pam J. Richart   1976-10-11
United States, Illinois, Edgar, Brushy Fork, 1 mi NE Hume, downstream of bridge, North America, 39.81038 -87.88281

INHS:MOLLUSK
85363Alison R. Brigham, Jack D. Unzicker & Joan L. Brower   1985-05-21
United States, Illinois, Lake, unnamed pond, NW Waukegan, just E U.S. 41 & N Mill Creek, North America, 42.42165 -87.93732

INHS:MOLLUSK
85846Kevin S. Cummings, Jeremy S. Tiemann & Christopher A. Phillips   2009-09-24
United States, Illinois, Hancock, Mississippi River, Hamilton, U.S. Rt. 136 bridge, North America, 40.39031 -91.36699

INHS:MOLLUSK
85851Sarah A. Bales, Cassi J. Moody & John M. Pfeiffer   2009-06-15
United States, Illinois, Livingston, Deer Creek, 5.1 mi SW Odell, between Co. Rd. 1700E & 2300N, North America, 40.96143 -88.60547

INHS:MOLLUSK
85860Robert E. DeWalt   2003-05-07
United States, Illinois, Iroquois, Prairie Creek, 4 mi SE Clifton, Co. Rd. 2700N, North America, 40.9022 -87.8722

INHS:MOLLUSK
85873Diane K. Shasteen, Colleen McLean & Otis Foster   2009-07-15
United States, Illinois, Bureau, Fairfield Ditch No. 1, 3 mi ESE Hooppole, Co. Rd. 2500N bridge, county line, North America, 41.5114 -89.85738

INHS:MOLLUSK
85876Kevin S. Cummings, Christopher A. Phillips, Jeremy S. Tiemann & Brandon D. Cheek   2010-09-14
United States, Illinois, Peoria, Illinois River, 1.2 mi ESE Peoria Heights, Upper Peoria Lake, river mile 167.4, North America, 40.74197 -89.55294

INHS:MOLLUSK
85879Kevin S. Cummings & Robert E. Szafoni   1999-05-21
United States, Illinois, Douglas, Scattering Fork, 1.5 mi SE Tuscola, Co. Rd. 800N bridge, North America, 39.76791 -88.26292

INHS:MOLLUSK
85882Alison P. Stodola & Kirk W. Stodola   2016-11-15
United States, Illinois, Vermilion, Middle Fork Vermilion River, 1.8 mi ENE Collison, between Higginsville & Collison bridge, North America, 40.23841 -87.77432

INHS:MOLLUSK
85884Mark J. Wetzel, Barbara J. Kasprowicz, Patrick A. Ceas & Angie E. Boerger   1988-06-07
United States, Illinois, Iroquois, Spring Creek, 0.6 mi NE Delrey, North America, 40.67841 -88.00787

INHS:MOLLUSK
85885Kevin S. Cummings, Jeremy S. Tiemann, Alison L. Price, Diane K. Shasteen & 2 INHS Technicians   2012-06-25
United States, Illinois, Will, North Branch Rock Creek, 3.1 mi WSW Peotone, W Kennedy Rd. bridge, North America, 41.30962 -87.83786

INHS:MOLLUSK
85889M.L. Goerlitz   1998-09-11
United States, Illinois, Fulton, Carlson Lake, Rt. 100, North America, 40.1855701 -90.2121949

INHS:MOLLUSK
85893Alison L. Price, Kevin S. Cummings, Sarah A. Bales, Diane K. Shasteen, Daniel B. Wylie, & Cassi J. Moody   2009-08-31
United States, Illinois, Douglas, Hackett Branch, 3 mi SE Tuscola, Co. Rd. 800N bridge, North America, 39.76792 -88.24222

INHS:MOLLUSK
85897Kevin S. Cummings & Bernard E. Sietman   2001-08-23
United States, Illinois, Douglas, Embarras River, 2 mi S Camargo, North America, 39.76745 -88.17615

INHS:MOLLUSK
85902Bernard E. Sietman & E. Anderson   2002-09-17
United States, Illinois, Jo Daviess, Apple River, 4 mi NE Elizabeth, S Apple River Rd, North America, 42.3579 -90.1714

INHS:MOLLUSK
85910Kevin S. Cummings & Christine A. Mayer   1988-05-03
United States, Illinois, Coles, Little Wabash River, below Lake Paradise spillway, at bridge, North America, 39.4102 -88.4402

INHS:MOLLUSK
85913R. Sauer, et al.   1994-08-24
United States, Illinois, Kankakee, Baker Creek, 1.25 mi N Aroma Park, North America, 41.10736 -87.81175

INHS:MOLLUSK
85915Kevin S. Cummings & Christine A. Mayer   1997-09-05
United States, Illinois, Vermilion, Little Vermilion River, 4 mi SE Georgetown, North America, 39.94143 -87.55147

INHS:MOLLUSK
85917Larry M. Page & Mike E. Retzer   1991-07-11
United States, Illinois, Kankakee, trib. Beaver Creek, 3 mi SW Hopkins Park, North America, 41.02853 -87.58116

INHS:MOLLUSK
85921H.E. Kitchel, M.A. Harris, Christopher A. Laird & Christopher A. Taylor   1993-06-23
United States, Illinois, Kankakee, Gar Creek Ditch, 2.4 mi SW Kankakee, Hwy. 115, North America, 41.09832 -87.90687

INHS:MOLLUSK
85931D.M. Freeman   1993-11-23
United States, Illinois, Hardin, Big Creek, 5 mi N Rosiclare, North America, 37.49505 -88.35175

INHS:MOLLUSK
85934C. Nolan   1980-10-16
United States, Illinois, Jackson, Kinkaid Lake, Murphysboro Spillway, North America, 37.77731 -89.44987

INHS:MOLLUSK
85945Kevin S. Cummings, Christopher A. Taylor & Bernard E. Sietman   2000-10-02
United States, Illinois, Stephenson, trib. Pecatonica River, 1.5 mi N Freeport, North America, 40.79546 -88.33454

INHS:MOLLUSK
85948Diane K. Shasteen, Jennifer S. Schwab, Rachel M. Vinsel & Hunter M. Ray   2010-05-27
United States, Illinois, Massac, Sevenmile Creek, Waldo Church Rd, North America, 37.1749 -88.62565

INHS:MOLLUSK
85951Bernard E. Sietman   2002-09-15
United States, Illinois, Jo Daviess, Apple River, 2 mi S Apple River, N Broadway Rd, North America, 42.47028 -90.09005

INHS:MOLLUSK
85954J. Konik   1978-09-07
United States, Illinois, Williamson, Crab Orchard Lake, spillway, North America, 37.69635 -88.9969

INHS:MOLLUSK
85955H. Essig   1989-09-21
United States, Illinois, Cook, Little Calumet River, Lansing, at state line, North America, 41.58137 -87.5253

INHS:MOLLUSK
85959Jeremy S. Tiemann, Kevin S. Cummings & Austin C. Haskett   2013-07-15
United States, Illinois, McLean, Sugar Creek, Normal, U.S. Business 51, North America, 40.49856 -88.99441

INHS:MOLLUSK
85969Laura Sass   2008-07-20
United States, Illinois, Bond, Shoal Creek, 2 mi ENE Pocahontas, Rt. 40, North America, 38.8371 -89.50498

INHS:MOLLUSK
85973Kevin S. Cummings, Christopher A. Phillips, Jeremy S. Tiemann & Brandon D. Cheek   2010-09-14
United States, Illinois, Marshall, Illinois River, 1.8 mi S Sparland, river mile 187.4, North America, 41.00264 -89.43974

INHS:MOLLUSK
85977Laura L. Sass   2007-09-28
United States, Illinois, Stark, Jack Creek, 5 mi N Wyoming, 1100N, North America, 41.13453 -89.77826

INHS:MOLLUSK
85981Laura L. Sass   2003-10-00
United States, Illinois, Jo Daviess, Furnace Creek, 2 mi NW Elizabeth, Long Hollow Rd, North America, 42.32998 -90.25802

INHS:MOLLUSK
85983Laura L. Sass   2008-08-05
United States, Illinois, Grundy, Hog Run, 4 mi ESE Seneca, Indian Trail Rd, North America, 41.29034 -88.53878

INHS:MOLLUSK
85985Laura L. Sass   2008-06-24
United States, Illinois, Tazewell, Ten Mile Creek, 2.8 mi ESE Peoria Heights, Hwy. 26, North America, 40.7358 -89.52176

INHS:MOLLUSK
85997Bernard E. Sietman   2002-09-15
United States, Illinois, Jo Daviess, Hells Branch, 4 mi NNW Woodbine, Schapville Rd, North America, 42.40009 -90.16557

INHS:MOLLUSK
86027Sarah A. Douglass, Ellie Moen, L. Hiseh & S. Beilke   2016-07-20
United States, Illinois, DuPage, Spring Brook, Orchard Street, by Itsaca golf course, North America, 41.9716 -88.01218

INHS:MOLLUSK
86035Sarah A. Douglass, Ellie Moen, Allison Sieja, L. Hiseh & S. Beilke   2016-07-21
United States, Illinois, DuPage, Salt Creek, Salt Creek Forest Preserve, North America, 41.95448 -87.98634

INHS:MOLLUSK
86038Laura L. Sass   2008-06-25
United States, Illinois, Stephenson, Rock River, 4.9 mi WNW Pecatonica, Winneshiek Rd, North America, 42.34631 -89.44383

INHS:MOLLUSK
86039Kevin S. Cummings & Robert E. Szafoni   2000-07-17
United States, Illinois, McLean, Mackinaw River, 4 mi W Lexington, abandoned bridge, North America, 40.6468 -88.8582

INHS:MOLLUSK
86054Jeremy S. Tiemann & Christopher A. Taylor   2007-05-22
United States, Illinois, Kendall, Aux Sable Creek, 2 mi WNW Minooka, Holt Rd. bridge, North America, 41.4686 -88.306

INHS:MOLLUSK
86058Robert E. DeWalt   2004-04-22
United States, Illinois, Iroquois, Shavetail Creek, 8.4 km S Crescent City, North America, 40.6976 -87.8549

INHS:MOLLUSK
86060Alison L. Price, Hunter M. Ray & Shawn Gibbs   2009-07-22
United States, Illinois, Pike, Sixmile Creek, 2500E, North America, 39.48851 -90.89692

INHS:MOLLUSK
86061Bernard E. Sietman   2002-09-15
United States, Illinois, Jo Daviess, South Fork Apple River, 4.5 mi NNE Stockton, Rt. 78 bridge, North America, 42.41825 -89.98374

INHS:MOLLUSK
86064   2007-07-25
United States, Illinois, Kendall, Little Rock Creek, Little Rock off Galena Rd, North America, 41.716936 -88.581364

INHS:MOLLUSK
86067Bernard E. Sietman & Joyce E. Hoffman   2000-04-11
United States, Illinois, Jackson, ditch, intersection of Rt. 3 & Sand Ridge Rd. (Town Creek Rd.), 1.5 mi SW Sand Ridge, North America, 37.7244 -89.46347

INHS:MOLLUSK
86075Kevin S. Cummings, Jeremy S. Tiemann, Christopher A. Phillips & Andrew R. Kuhns   2008-10-13
United States, Illinois, White, Wabash River, slough upstream New Harmony, North America, 38.13773 -87.93863

INHS:MOLLUSK
86078Jeremy S. Tiemann & Austin C. Haskett   2013-06-04
United States, Illinois, Jackson, pond, 3.8 mi SSE Carbondale, Wildwood Mobile Home Park, off Giant City Rd, North America, 37.68158 -89.17869

INHS:MOLLUSK
86081Jeremy S. Tiemann, Brandon D. Cheek & Andrew R. Kuhns   2011-05-17
United States, Illinois, Lee, wetland, 6 mi S Dixon, Rt. 26 bridge, North America, 41.67435 -89.45924

INHS:MOLLUSK
86087B. Haller   1975-04-01
United States, Illinois, Jackson, pond, on campus of Southern Illinois Carbondale, North America, 37.70881 -89.22581

INHS:MOLLUSK
86088Alison R. Brigham & Jack D. Unzicker   1990-09-23
United States, Illinois, Jackson, Brushy Fork, 4 mi SE Willisville, NE Campbell Hill, North America, 37.94046 -89.53761

INHS:MOLLUSK
86092Alison R. Brigham & Jack D. Unzicker   1980-09-23
United States, Illinois, Jackson, Brushy Fork, 4 mi ESE Williamsville, 2 mi E high school, North America, 37.94755 -89.53472

INHS:MOLLUSK
86093Don W. Webb   1990-09-20
United States, Illinois, Hardin, Old Driver Spring, 3.8 mi S Karbers Ridge, 5.9 mi NNW Elizabethtown, North America, 37.52715 -88.33527

INHS:MOLLUSK
86094Don W. Webb   1991-12-05
United States, Illinois, Hardin, Old Driver Spring, 3.8 mi S Karbers Ridge, springhead, North America, 37.52508 -88.33519

INHS:MOLLUSK
86095Allison R. Brigham & Robert L. Moran   1977-08-04
United States, Illinois, Alexander, Old Channel, near Tamms wastewater treatment lagoon outfall, at dredged side channel, North America, 37.23098 -89.26174

INHS:MOLLUSK
86099Mark J. Wetzel & Barbara J. Kasprowicz   1990-06-01
United States, Illinois, Hardin, Rose Creek, 1.9 mi WNW Karbers Ridge, North America, 37.59033 -88.36569

INHS:MOLLUSK
86102Erika E. Bilger & Allison N. Sieja   2016-08-22
United States, Illinois, Lake, wetland, North Chicago mitigation wetland, 1 mi N Knollwood, North America, 42.3003 -87.8826

INHS:MOLLUSK
86104Alison L. Price, Hunter M. Ray & Shawn Gibbs   2009-07-13
United States, Illinois, Pike, McCraney Creek, 3 mi NE Hull, off 1850E, North America, 39.75421 -91.15003

INHS:MOLLUSK
86105Alison L. Price, Hunter M. Ray & Shawn Gibbs   2009-07-13
United States, Illinois, Pike, Hadley Creek, 4.1 mi E Hull, North America, 39.70225 -91.12967

INHS:MOLLUSK
86106Alison L. Price, Hunter M. Ray & Shawn Gibbs   2009-07-13
United States, Illinois, Pike, Kiser Creek, Hwy. 96 near New Canton, North America, 39.6329 -91.09207

INHS:MOLLUSK
86108Lucinda Johnson-Singer & Robert Singer   1976-11-06
United States, Illinois, Vermilion, trib. Stony Creek, 2.3 mi SSE Hope, North America, 40.17166 -87.89059

INHS:MOLLUSK
86109Brooks M. Burr & K.S. Cummings   1993-06-29
United States, Illinois, Alexander, Lake Creek, bridge crossing closest to spillway, North America, 37.10767 -89.32743

INHS:MOLLUSK
86112Robert E. DeWalt   2005-06-01
United States, Illinois, Kane, Blackberry Creek, 3 km N Sugar Grove, Hannaford Wood Preserve, North America, 41.7895 -88.4492

INHS:MOLLUSK
86118Kevin S. Cummings, Jeremy S. Tiemann & Brandon D. Cheek   2011-07-14
United States, Illinois, Fayette, Bear Creek, Co. Rd. 2100N, North America, 39.04283 -89.14204

INHS:MOLLUSK
86120Kevin S. Cummings & Bernard E. Sietman   2001-07-06
United States, Illinois, Vermilion, Little Vermilion River, Sidell, 1 mi N Co. Rd. 600E, North America, 39.9205 -87.82281

INHS:MOLLUSK
86124Alison R. Brigham, Matt K. Butcher & Sue Moran   1977-06-24
United States, Illinois, Alexander, Hartline Creek, 0.2 mi E Elco, downstream of Minerals Company, IL 127, North America, 37.30331 -89.26253

INHS:MOLLUSK
86127Diane K. Shasteen, Colleen McLean & Otis Foster   2009-06-08
United States, Illinois, Alexander, Jackson Creek, Tamms, N of Tamms Prison Rd. bridge, North America, 37.26215 -89.26495

INHS:MOLLUSK
86128Mike Retzer & Mike Hardman   1999-08-30
United States, Illinois, Vemilion, Bean Creek, 2 mi NW Henning, 3100N bridge, North America, 40.31432 -87.73587

INHS:MOLLUSK
86131John J. Suloway & Liane Barrowman   1976-08-19
United States, Illinois, Whiteside, Elkhorn Creek, 5.5 mi E Coleta, 300 ft. downstream Penrose Rd, North America, 41.8875 -89.7012

INHS:MOLLUSK
86132Jeremy S. Tiemann, Kevin S. Cummings & Samantha M. Jaworski   2012-09-11
United States, Illinois, Williamson, Grassy Creek, Stonefront Rd, North America, 37.62958 -88.72715

INHS:MOLLUSK
86134   1985-08-06
United States, Illinois, Will, Kankakee River, Braidwood Monitoring Area, North America, 41.24919 -88.13159

INHS:MOLLUSK
86138Jeremy S. Tiemann, Kevin S. Cummings & Samantha M. Jaworski   2012-09-12
United States, Illinois, Gallatin, Beaver Creek, Rt. 1, North America, 37.60315 -88.20842

INHS:MOLLUSK
86143Jeremy S. Tiemann, Kevin S. Cummings & Samantha M. Jaworksi   2012-09-13
United States, Illinois, Williamson, South Fork Saline River, Canaville Rd, North America, 37.65599 -88.9012

INHS:MOLLUSK
86145Jeremy S. Tiemann, Kevin S. Cummings & Samantha M. Jaworksi   2012-09-12
United States, Illinois, Pope, Hunting Branch, Bell Smith Springs, North America, 37.52348 -88.661

INHS:MOLLUSK
86148Jeremy S. Tiemann & Kevin S. Cummings   2011-09-01
United States, Illinois, Ogle, Leaf River, E of Leaf River, North America, 42.12738 -89.39146

INHS:MOLLUSK
86180Alison P. Stodola, Jeremy S. Tiemann, Kevin S. Cummings, Rachel M. Vinsel & Allison N. Sieja   2016-10-04
United States, Illinois, Clay, Little Wabash River, Sailor Springs Road, North America, 38.7758 -88.4909

INHS:MOLLUSK
86197Alison R. Brigham, Matt K. Butcher & Sue Moran   1977-06-24
United States, Illinois, Alexander, Cooper Creek, 0.5 mi SW Mill Creek, North America, 37.3326 -89.25245

INHS:MOLLUSK
86199Erika Bilger   2016-07-12
United States, Illinois, DuPage, Salt Creek, Salt Creek Forest Preserve, Itasca, North America, 41.9544 -87.9859

INHS:MOLLUSK
86200Wally Matsunaga   1983-08-31
United States, Illinois, McHenry, Piscasaw Creek, Chemung, Rt. 173 bridge, North America, 42.41575 -88.67197

INHS:MOLLUSK
86202Jeremy S. Tiemann, Kevin S. Cummings & Samanatha M. Jaworski   2012-09-11
United States, Illinois, Johnson, Sugar Creek, 1.8 mi WSW New Burnside, Parker Rd, North America, 37.56723 -88.80036

INHS:MOLLUSK
86206John J. Suloway & Liane Barrowman   1976-08-17
United States, Illinois, Whiteside, County Ditch No. 2, 5 mi W Tampico, North America, 41.62225 -89.86241

INHS:MOLLUSK
86208John J. Suloway & Liane Barrowman   1976-08-14
United States, Illinois, Whiteside, Elkhorn Creek, 4.25 mi N Sterling, North America, 41.84754 -89.70141

INHS:MOLLUSK
86210John J. Suloway & Liane Barrowman   1976-08-16
United States, Illinois, Whiteside, Elkhorn Creek, 2.75 mi NW Sterling, North America, 41.80583 -89.74248

INHS:MOLLUSK
86213John J. Suloway & Liane Barrowman   1976-09-10
United States, Illinois, Whiteside, Lynn Creek, 6.9 mi SW Morrison, downstream of bridge, North America, 41.75738 -90.08422

INHS:MOLLUSK
86216John J. Suloway & Liane Barrowman   1976-09-12
United States, Illinois, Whiteside, Elkhorn Creek, 4 mi W Rock Falls, at intersection of Rt. 30, Rt. 2 and Rt. 5 (I-88), North America, 41.7721 -89.7721

INHS:MOLLUSK
86242Erika Bilger   2016-05-18
United States, Illinois, Kane, wetland, Elgin, Fox River Forested Fen Forest Preserve, North America, 42.0694 -88.26884

INHS:MOLLUSK
86250Mark J. Wetzel & M.K. Butcher   1976-08-08
United States, Illinois, Rock Island, trib. Rock River, 0.25 mi SE Carbon Cliff, North America, 41.49238 -90.38436

INHS:MOLLUSK
86253Robert E. DeWalt   2005-05-18
United States, Illinois, Stephenson, Yellow Creek, 4 km SE Pearl City, Mill Grove Rd, North America, 42.2492 -89.7758

INHS:MOLLUSK
86258Jeremy S. Tiemann, Kevin S. Cummings & Austin C. Haskett   2013-07-15
United States, Illinois, Logan, Clear Creek, 1.9 mi NE Atlanta, Historic Rt. 66, North America, 40.28037 -89.20917

INHS:MOLLUSK
86264Robert E. DeWalt   2005-05-18
United States, Illinois, Stephenson, Yellow Creek, 7.5 km E Stockton, Sunnyside Rd, North America, 42.3443 -89.9132

INHS:MOLLUSK
86273Mark J. Wetzel & Ann E. Mankowskii   1995-10-12
United States, Illinois, Ogle, Kilbuck Creek, 2.25 mi E Davis Junction, Hwy. 72, North America, 42.10036 -89.05359

INHS:MOLLUSK
86281Robert E. DeWalt   2005-06-02
United States, Illinois, Winnebago, Raccoon Creek, 2.1 mi WNW Rockton, North America, 42.4672 -89.1357

INHS:MOLLUSK
86285Kevin S. Cummings, Christine A. Mayer & Jeremy S. Tiemann   2005-08-30
United States, Illinois, Winnebago, Kishwaukee River, 3 mi E New Milford, Kishwaukee County Forest Preserve, North America, 42.19027 -89.00197

INHS:MOLLUSK
86295Kevin S. Cummings & Christine A. Mayer   1992-08-07
United States, Illinois, Lee, Franklin Creek, 3 mi NNW Franklin Grove, Sunday Bridge, Franklin Creek Natural Area, North America, 41.8547 -89.34754

INHS:MOLLUSK
86296Kevin S. Cummings, Christopher A. Phillips, Jeremy S. Tiemann & Brandon D. Cheek   2010-09-14
United States, Illinois, Marshall, Illinois River, 5.2 mi NNE Chillicothe, river mile 186.3, North America, 40.98806 -89.43984

INHS:MOLLUSK
86312Sarah A. Bales, Kevin S. Cummings, Jeremy S. Tiemann & Brandon D. Cheek   2010-08-25
United States, Illinois, McHenry, Fox River, Algonquin, Algonquin Rd. bridge, North America, 42.16387 -88.29179

INHS:MOLLUSK
86316Jeremy S. Tiemann, Christopher A. Taylor & D. Ellington   2007-10-10
United States, Illinois, McHenry, South Branch Kishwaukee River, 1 mi SSW Huntley, North America, 42.1556 -88.4383


Page 17, records 1601-1700 of 1872


Google Map

Google Maps is a web mapping service provided by Google that features a map that users can pan (by dragging the mouse) and zoom (by using the mouse wheel). Collection points are displayed as colored markers that when clicked on, displays the full information for that collection. When multiple species are queried (separated by semi-colons), different colored markers denote each individual species.

Google Earth (KML)

This creates an KML file that can be opened in the Google Earth mapping application. Note that you must have Google Earth installed on your computer to make use of this option.
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