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(Click for frequent words.) 57 Quelccaya ice cap 56 Pontificia Universidad Catolica del 54 Universidad del Pacifico 53 Quelccaya 51 Gino Casassa 51 Peru 51 CholeraGarde ® 50 Cordillera Blanca 50 Brigham Grette 49 Huascaran 49 ancient Incan capital 49 Amazonian rainforests 49 tropical glaciers 49 glaciology 48 Universidad de Santiago 48 Tapajós 48 Paleoclimate 48 Sechura Desert 48 paleoclimatology 48 Koobi Fora 48 Wallacea 47 Pulacayo deposit located 47 Galapagos Archipelago 47 Antarctica 47 Mount Mabu 47 Venezuelan Andes 47 Mesoamerican Biological Corridor 47 Vilcoro Gold Property 47 Oswaldo Juarez 47 Pontificia Universidad Católica del 47 Appy Sluijs 46 Cariaco Basin 46 Chancay 46 Noel Kempff 46 Universidad de Los 46 archeology geology 46 Michael Studinger 46 Alex Chepstow Lusty 46 dogsled expedition 46 Cerro Corona mine 46 Amazon basin 45 Turkana Basin 45 glacial retreat 45 Iquitos Peru 45 paleoenvironmental 45 humid tropics 45 glaciological 45 Damien Gildea 45 CIRES 45 Chacaltaya glacier 45 Powerful Earthquake Strikes 45 Bielsa resigns 45 Pantanal wetlands 45 Chilean Fjords 45 Seamounts 45 sediment cores 45 arid Atacama Desert 45 Ecuadorian Andes 45 Earthwatch Institute 45 Andes Mountains 45 Inape 45 geomicrobiology 45 Svalbard archipelago 45 glacial geology 44 paleobotany 44 tectonically active 44 Lake Yoa 44 Bolivian altiplano 44 Moche civilization 44 Mayan Ruins 44 Azuay province 44 paleoclimatologist 44 Earthwatch 44 Guatemalan highlands 44 Universidad Peruana Cayetano Heredia 44 Osa Peninsula 44 Tropical Biology 44 Katharine Willett 44 erupting Chaiten volcano 44 Marcona copper 44 Mayan archeological 44 harlequin frog 44 Jorge Voto Bernales 44 Mayan highlands 44 Argentine Patagonia 44 long dormant Chaiten 44 Grants Mineral Belt 44 Chiribaya 44 owned Marcona Copper 44 polar oceans 44 semidesert 44 Munoz Jaramillo 44 Galapagos archipelago 44 Ruth DeFries 43 coldest driest 43 Brazil Pantanal 43 Norte Chico 43 iron ore Arapiraca Project 43 Eske Willerslev 43 boreal regions 43 Universidad del Valle 43 Galápagos Islands 43 montane forests 43 Magellanic penguin 43 Universidad Nacional Autónoma de 43 dense rainforests 43 aerosol concentrations 43 Amazonian jungle 43 Jakobshavn Isbrae 43 Machu Picchu artifacts 43 Belize Costa Rica 43 Antartica 43 Liang Bua cave 43 De Frood 43 Macusani Uranium District 43 mid Pliocene 43 Galapagos islands 43 Natalia Rybczynski 43 Lipena copper gold 43 glacier retreat 43 tropics 43 Pastos Grandes lithium brine 43 Polar Regions 43 subglacial 43 golden toad 43 Lamont Doherty 43 Mount Pinatubo exploded 43 Pampa Melchorita 43 equatorial 43 Belize Guatemala Honduras 43 Aguaruna 43 Universidad Nacional de 43 Eliane Karp 43 paleoclimate 43 Universidad Catolica de 43 Los mineros de 42 Bouvet Island 42 Bolivian Andes 42 Nazca civilization 42 solar insolation 42 sub glacial lakes 42 NCAR scientist 42 Pukaqaqa copper gold 42 Coringa Project 42 El Misti 42 Pinaya Project 42 Honduras Nicaragua Panama 42 lowland plains 42 biodiverse ecosystems 42 Cryogenian 42 Puijila 42 shouted Gracias 42 Pastaza 42 Tharsis Rise 42 SERVIR 42 Ching Kljestan 42 Cayetano Heredia 42 paleoclimatologists 42 Enric Palle 42 highlands 42 MAR ECO 42 atmospheric chemistry 42 coastal upwelling 42 Andean Cordillera 42 Antarctic 42 Pontificia Universidad Católica 42 balsa raft Kon Tiki 42 Transantarctic Mountains 42 Comahue 42 Monteverde Cloud Forest Preserve 42 McMurdo Dry Valleys 42 Nature Geosciences 42 Vilcabamba 42 endangered rainforests 42 pliosaur ferocious predator 42 icefields 42 paleoecologist 42 Penny Whetton 42 Universidade Federal de 42 Mesoamerican Reef 42 Atelopus 42 Himalayan river basins 42 Amazonian forest 42 Strong Earthquake Strikes 42 Aiguo Dai 42 mammal fossils 42 Andes 42 outlet glaciers 42 Sweden.se meets celebrity 42 Universidad de los Andes 42 geology paleontology 42 ambassador Brice Lalonde 42 permafrost degradation 42 Cerro Aconcagua 42 mammalogy 42 paleoclimatic 42 Scripps Oceanography 42 tropical subtropical 42 geohazards 42 Hindu Kush Himalaya 42 Kawesqar 42 hydrographical 42 atmospheric oceanic 42 paleomagnetic 42 geology hydrology 41 Izabella Teixeira 41 receding glaciers 41 Ny Alesund 41 Arenal volcano 41 paleobiologists 41 Antartic 41 Maya Biosphere Reserve 41 lake sediments 41 Amazonian rainforest 41 Cerro Pachon 41 Carancas 41 Tintaya copper mine 41 Andean foothills 41 glaciers retreating 41 Indian Ocean Dipole 41 temperate rainforests 41 Claudia Rivero 41 APGROUP LatinAmerica ;) COUNTRY 41 Gaston Acurio 41 geochronology 41 Boreal forests 41 Patagonia 41 frozen wastelands 41 chewed coca 41 Ambassador Jorge Voto 41 Ayacucho Peru 41 glaciers 41 Universidad de Concepción 41 Perez Cueva 41 Ashaninka 41 Subarctic 41 Andeans 41 Nevado del Huila 41 Melting glaciers 41 multi decadal 41 Store Norske 41 deforestation 41 Islas de la 41 Ometepe Island 41 Ny Ålesund 41 Antarctica EPICA 41 Andean glaciers 41 Los Pumas Manganese 41 Macusani plateau 41 Vostok Station 41 IPS IFEJ 41 climate 41 Guatamala 41 Willerslev 41 Universidad de Buenos Aires 41 Muller Landau 41 MACHU PICCHU PUEBLO 41 Susse Albonico 41 hominid footprints 41 Cerro Paranal 41 volcanic archipelago 41 biologically diverse regions 41 Victor Girao former 41 Quechua speaking 41 Cerro Verde mine 41 Mongabay How 41 Svalbard Islands 41 Gamburtsev 41 El Nino Southern Oscillation 41 Rescued lions 41 Diego Portales 41 Aberdeen Oceanlab 41 Patagonian Andes 41 GRID Arendal 41 Arctic Archipelago 41 Dominican Republic Honduras Nicaragua 41 Amazon Rainforest 41 Andean mountaintop 41 Incans 41 southern highlands 41 Peru Andes mountains 41 Plate tectonics 41 Peruvian Andes 41 Elqui Valley 41 Neotropical 41 Katharine Hayhoe 41 Daniel Perez Cueva 40 Qinghai Tibetan plateau 40 Biogeochemistry 40 warm interglacial 40 Hurtigruten cruise 40 Colquipucro 40 Bramley Murton 40 LTER 40 molluscan 40 Amundsen Sea 40 Macchu Pichu 40 Ambassador Heraldo Muñoz 40 fieldwork 40 Magallanes Region 40 Qaanaaq 40 Macchu Picchu 40 Steven Levitsky 40 Cusco Peru 40 submarine volcanoes 40 Cenozoic 40 Afro descendants 40 Inca civilization 40 Constancia copper 40 Glaciology 40 Saharan Desert 40 Jane Ferrigno 40 Bolivian Altiplano 40 Andes foothills 40 Chilean Andes 40 Kuelap 40 Barro Colorado 40 Nunavut Territory coal 40 mountain glaciers 40 Woolly mammoth 40 Massive Sulphide Project 40 Sierra Morena 40 geohazard 40 prospective Deseado Massif 40 geology botany 40 Ayoreo 40 geodynamics 40 Jay Lawrimore chief 40 Newmont Yanacocha 40 Neymar Pato lead 40 highland forests 40 Carajas Mineral Province 40 Condestable Mine located 40 Bering Glacier 40 ancient supercontinent 40 Maricunga Belt 40 Dry Valleys 40 Ivonne Baki 40 stingless bees 40 Ojos del Salado 40 Giorgio Ferrario 40 sedimentary deposits 40 Semi arid 40 Nankai Trough 40 Milensky 40 Laetoli 40 Jay Zwally 40 Cori Puncho 40 Inaja Project 40 Pontificia Universidad Catolica 40 Hamish Pritchard 40 Salta province 40 geophysicist Scott Luthcke 40 Patagonian 40 Kermadec Arc 40 paleoecology 40 Lota Bay 40 Kristin Laidre 40 PaleoAngola project 40 climatic variability 40 Mount Aconcagua 40 Zhao Xijin 40 Huichol Indians 40 Antarctic Dry Valleys 40 Quaternary Period 40 tropical forests 40 Mike Morwood 40 Exequiel Ezcurra 40 autonomous Xinjiang Uyghur 40 Antarctic icecap 40 Anasazi ruins 40 Volcán 40 Glaciologist 40 Eduardo Zorita 40 Mirador Basin 40 Siberia Mongolia 40 Desaguadero 40 Jaime Razuri 40 Río de la 40 hunter gatherer tribe 40 Instituto Nacional de Pesquisas 40 Tad Pfeffer 40 Historia Natural 40 radiocarbon dated 40 Sermilik Fjord 40 Artic Ocean 40 Patagonian province 40 Ubinas volcano 40 Sarapiqui 39 Ushuaia Tierra del Fuego 39 glaciologist 39 Avoided deforestation 39 IODP 39 Polar explorers 39 Envisat ASAR 39 Copán 39 penguin rookery 39 southerly latitudes 39 De Noboa 39 Neogene 39 Malmbjerg molybdenum development 39 geological 39 Incan mummy 39 tropical forest 39 Philip Mote 39 sub tropic 39 Cristo de los 39 explorer Roald Amundsen 39 geology 39 Sierra Negra 39 oceanic islands 39 Mantaro Phosphate Project 39 marine sediments 39 Uraba region 39 Father Eusebio Kino 39 ozone layer depletion 39 architect Lorenzo Piqueras 39 Rabinal 39 biogeography 39 oceanographic institute 39 Roberto Smeraldi 39 Xiomara Blandino 39 Ixhuatan Project located 39 anomalously warm 39 Otto Bliesner 39 deepest freshwater 39 cosmic ray observatory 39 Greenland 39 Middle Awash 39 central highlands 39 Kuna Indians 39 Huarochiri Province 39 Marcial Castro 39 El Torno gold 39 paleobotanist 39 Monteverde Cloud Forest 39 Mata Atlantica 39 Bette Otto Bliesner 39 temperate forests 39 remote Afar 39 Zhongshan Station 39 Darwin Mounds 39 coral atolls straddling 39 nomadic hunter gatherer 39 expeditions 39 Qinghai Plateau 39 Chile 39 ozone depletion 39 terra preta 39 Yuty project 39 La Silla Observatory 39 Shipibo 39 Weiqing Han 39 rainforest 39 Lake Untersee 39 Copan Ruinas 39 Ucayali Basin 39 East Kivu Graben 39 DBCCA 39 Yolanda Kakabadse 39 Altai Mountains 39 biodiverse regions 39 El Colegio de 39 tundra vegetation 39 Mark Hindell 39 warmer wetter 39 Minik Rosing 39 Abajo Mountains 39 NCAR scientist Gerald Meehl 39 seabed sediments 39 Lima Karel Navarro 39 Honduras Nicaragua Guatemala 39 Galápagos 39 roseum 39 coral reef degradation 39 Maria Angelica Lala 39 Ollachea Project 39 Jujuy province 39 polar icecap 39 archaeological expedition 39 vertebrate fossil 39 Universidad del Salvador 39 biogeographic 39 Universidad Católica de 39 Gombe Stream 39 Eocene Oligocene 39 Virunga Mountains 39 Socompa 39 Guatemala Belize 39 Fra Mauro 39 Adélie penguin 39 APGROUP Oceania ;) COUNTRY 39 Shad O'Neel 39 NanTroSEIZE 39 volcanoes 39 Instituto Nacional de Enfermedades 39 icesheets 39 Belize Guatemala 39 Sekercioglu 39 Pico de Orizaba 39 Costa Rico 39 ancient Mayan ruins 39 deglaciation 39 stratospheric ozone chemistry 39 Byrd Polar 39 glacier melts 39 Quechua Aymara 39 Rio Zarza 39 ICRAF 39 vegetation greenness 39 prehistoric crocodile 39 sedimentological 39 GeoScience 39 meltwater stonefly 39 Tasiilaq 39 Arequipa Peru Vargas Llosa 39 Markets #Q.# 39 Larsemann Hills 39 Hato Mayor 39 Incan artifacts 39 Naomi Campbell Hospitalized 39 Terre Adelie 39 Mesoamerica 39 subarctic 39 melting glacier 39 ecologists biologists 39 glacial interglacial 39 Hydrology Meteorology 39 climate change 39 Zoque Indians 39 Warmer seas 39 Sierra Madre mountains 39 Earnest Shackleton 39 Chile Atacama 39 Azuero 39 Honduras Nicaragua El Salvador 39 glacial moraines 39 Crucitas gold 39 NNN ANDINA 39 diatom species 39 drier hotter 39 coffee plantations 39 polar explorer Roald Amundsen 38 glaciologists 38 Atacama Desert Chile 38 tidewater glacier 38 Late Paleozoic 38 Maricunga Project 38 geomorphological 38 Punta Rocas 38 Chimbote 38 Louise Leakey 38 Ixhuatan 38 Curitomai 38 biogeochemistry 38 Salta Province 38 Salvador Moya Sola 38 Olancho province 38 Guajira Peninsula 38 Balsas 38 director Claudia Llosa 38 Coricancha mine 38 Peruvian highlands 38 Juneau Icefield 38 Mincetur 38 Guge Kingdom 38 glacier 38 ICESCAPE 38 Fenix nickel project 38 Antarctic peninsula 38 Cementos Lima 38 gecko species 38 mighty T. rex 38 uncontacted tribe 38 Borge Ousland 38 Tikal Guatemala 38 Calafate 38 microbial ecology 38 Incan citadel 38 subtropical forests 38 biome 38 Betty Cueva 38 benthos 38 Ilulissat glacier 38 Beardmore Glacier 38 Fundación ProAves 38 equator 38 mycology 38 methane seeps 38 Maya lowlands 38 Wilfredo Ardito 38 Azuero Peninsula 38 Roxana Rivadineira 38 avifauna 38 Pierina mine 38 Matagalpa 38 Quichua 38 mantle convection 38 ethnobotany 38 Copaquire copper molybdenum 38 terrestrial biosphere 38 scientist Jay Zwally 38 military academy Leoncio 38 CIFOR 38 glaciers icebergs 38 tropic regions 38 fossils unearthed 38 Afro descendant 38 bryophytes 38 Fujimori fled 38 vertebrate paleontologist 38 Anthony Nyong 38 Hellas Planitia 38 Changcheng Station 38 Ucayali basin 38 Chillán 38 CoECRS 38 accomplished glaciologists 38 Universidade Federal 38 Pablo Talavera 38 Coral reef 38 Andes mountains 38 Bolivian highlands 38 earliest hominid 38 Kunlun Station 38 Amazonian deforestation 38 Pastoruri 38 Galapagos Islands 38 coral reef ecology 38 Altai mountains 38 Christian Marcussen 38 Tapajos Gold Province 38 Las Crucitas 38 Neanderthal extinction 38 Mina Justa copper 38 cratons 38 drier warmer 38 Caspiche Project 38 Amazonia 38 Universidad Nacional 38 Narsaq 38 Universidad Nacional Autonoma de 38 Boliva 38 thawing tundra 38 Cordillera Azul 38 forams 38 midlatitude 38 Lophelia 38 Machu Picchu ruins 38 Tarka L' 38 lowland tropical 38 thermal vents 38 Moya Sola 38 Meal Replacement Products 38 biometeorology 38 Inambari 38 Pelotas 38 La Rioja Province 38 RES# [001] 38 Narcisa de 38 Bindschadler 38 temperate latitudes 38 Dried Processed Food 38 Gabriele Hegerl 38 Cementos Pacasmayo SAA 38 Waskar Ari 38 Guanacaste province 38 Schmittner 38 sheet Summerhayes 38 Ayacucho province 38 Tarapaca 38 Vitousek 38 Beringia 38 Ileret 38 NCAOR 38 Naomi Mapstone 38 El Zapote 38 Chaco Canyon 38 Kayapo Indians 38 Chilean Patagonia 38 Research LTER 38 Premier Hans Enoksen 38 ocean basins 38 Carlos Nobre 38 Lake Bosumtwi 38 La Falda Project 38 Fulbright Fellow 38 Deaths Global total 38 grassland ecosystems 38 Mongolia 38 Yucatán Peninsula 38 lichens 38 Chajnantor 38 Nielsen Gammon 38 Chinchorro 38 ESRL 38 Los Yungas 38 Kilimanjaro glaciers 38 Sechura 38 Kittlitz murrelet 38 Khumbu glacier 38 Mongolian steppes 38 Russ Hopcroft 38 lowland rainforests 38 Snowball Earth 38 sedimentology 38 archeology anthropology 38 Kimbe Bay 38 Cerro Matoso mine 38 Anvers Island 38 dense rainforest 38 rediscovered Machu Picchu 38 biodiversity hotspot 38 ancient Inca ruins 38 snowier winters 38 poleward shift 38 Pumalin 38 northerly latitudes 38 Biogeography 38 lowland rainforest 38 Archaean 38 Pronatura 38 peatland destruction 38 geologically active 38 Machu Pichu 38 Paleogene 38 IFM GEOMAR 38 Unicamp 38 El Teide 38 northern boreal forests 38 Climatic Change 38 LIP ir 38 San Antonio de Turiri 38 Bellavista mine 38 anthropological fieldwork 38 Guatemala 38 geomorphology 38 Manaus Brazil 38 Gurupi 38 Rod Salm 38 Bruno Stagno Ugarte 37 Vara Blanca 37 thermophiles 37 Malmbjerg molybdenum project 37 Jorge Tadeo Lozano 37 megadrought 37 Dr van Ommen 37 La Rioja province 37 subpolar 37 island biogeography 37 Espirito Santos 37 geologic 37 hydrosphere 37 floristic 37 remote sensing 37 Costa Rica 37 Geochemistry 37 CONAF 37 Muggiati 37 Planitia 37 cryosphere 37 Sierra Madre del Sur 37 Cerro Tololo 37 Toqui mine 37 Porsild 37 Universidade de 37 Pacific Decadal Oscillation PDO 37 Landsat satellite 37 Waleed Abdalati director 37 Greater Antilles 37 coach Sergio Markarian 37 tropical rainforest 37 Kihansi spray toad 37 San Albino Murra 37 Chapada Diamantina 37 deforesting 37 Earthwatch volunteers 37 Holocene epoch 37 Julienne Stroeve 37 expedition 37 Universidad del 37 Óscar Arias Sánchez 37 IOCG belt 37 hydrothermal vent 37 Natalie Mahowald 37 atop Mauna Kea 37 Antarctic continent 37 Pallancata silver 37 Condestable mine 37 Svalbard islands 37 MOL K2 37 warmer drier summers 37 Magellanic 37 Vinson Massif 37 rainforests 37 hydrology geology 37 Camisea gas 37 Potiguar 37 Saharan Africa 37 Punta Hermosa 37 Last Glacial Maximum 37 subantarctic 37 Cerrado 37 lungless salamanders 37 Cuetzalan 37 Punta Tombo 37 Strong Earthquake Rattles 37 oceans coasts 37 katabatic winds 37 primeval forests 37 tropical savanna 37 warmer wetter winters 37 Quebrada Blanca mine 37 tropical latitudes 37 Peruvian rainforest 37 radiocarbon dating 37 indigenous peoples 37 Velicogna 37 SeaWiFS 37 Nankai Trough Zone 37 glacial fjord 37 Chiloe Island 37 undersea volcanoes 37 uncontacted Indian 37 Stegodon 37 Chajnantor plateau 37 Cerrejon mine 37 Santander polymetallic 37 Abancay 37 Qinghai Tibet plateau 37 palaeontology 37 balsa logs 37 Sinharaja 37 paleontological dig 37 strongman Alberto Fujimori 37 Toolik Lake 37 Cerro Chorcha Porphyry Copper 37 Guarani Aquifer 37 lake sediment cores 37 NASA rovers Spirit 37 glacial melt 37 palaeoclimate 37 Tropical rainforests 37 Urubamba Valley 37 Chilled Processed Food 37 peat lands 37 Peruvian Amazon 37 Ethnobotany 37 Observatory NOAO 37 Chucapaca 37 Triassic Period 37 Credicorp BAP 37 Dallol 37 Ulu Masen 37 Antamina copper zinc 37 inhospitable environments 37 Ilafa 37 icefield 37 geochemists 37 Siula Grande 37 seafloor sediment 37 altiplano 37 journal Geology 37 Gavin Prideaux 37 region barren expanse 37 Dirk Hartog Island 37 nitrogen fixation 37 Prime Minister Apisai Ielemia 37 Gakkel Ridge 37 Curcurpe projects 37 Bayovar 37 alpine glaciers 37 Corporation Embrapa 37 amphibian extinctions 37 Cuzco Peru 37 Kharecha 37 Tumi geologist 37 Huayna Potosi 37 P. Dee Boersma 37 microfossils 37 melting glacial 37 chemosynthetic 37 Hik 37 mineralogist 37 Ecoregion 37 Plaza Huincul 37 austral 37 Namib Desert 37 volcano spews ash 37 journal Climatic Change 37 Livinginperu.com Peru official 37 balsa raft 37 Abdalá Bucaram 37 climate modeler 37 atmospheric sciences 37 numerical modeling 37 storied snows 37 glaciations 37 marine ecologists 37 Hellas Basin 37 Axel Heiberg Island 37 Argentina Perito Moreno 37 Hawaii Mauna Kea 37 subarctic regions 37 hydrological cycles 37 mangrove reforestation 37 Antilla Copper Molybdenum 37 lunar orbiters 37 biodiversity 37 acidifying oceans 37 Universidad de Valladolid 37 Universidad Austral 37 herbarium specimens 37 temperate zones 37 Alejandro Toledo 37 Nasca Lines 37 Biological Station 37 agro ecology 37 Crooked Trails 37 Chilean fjords 37 Antofagasta Chile 37 Los Sauces 37 Ty# ETEC E. coli 37 Guianas 37 Opposes drilling 37 journalist Eduardo Galeano 37 AcmeLabs laboratory 37 equatorial regions 37 supervolcanoes 37 combating desertification 37 meridional overturning circulation 37 Pinhais 37 mist shrouded mountains 37 Bolivia 37 Jesuit missionaries 37 neotropical 37 Earthwatch expedition 37 writer Isabel Allende 37 Lake Atitlan 37 Alumbrera copper 37 Eleutherodactylus 37 Cerro Lindo 37 Inca Empire 37 Monarch butterfly reserve 37 Glenn Juday 37 Iguazu falls 37 radar altimetry 37 Kangerlussuaq Greenland 37 Chachapoya 37 Govindasamy Bala 37 Los Helados 37 Tropical deforestation 37 paramo 37 glacier melt 37 Curipamba 37 Ayoreo Totobiegosode 37 glacial melting 37 Fulbright Fellowship 37 deep convective clouds 37 Kasatochi 37 driest continents 37 limnology 37 UFRJ 37 Uganda Rwenzori Mountains 37 Zeebe 37 LIP wb 37 RV Polarstern 37 Gerald Meehl 37 Oceans Flagship 37 Australian aborigines 37 equatorial waters 37 Salar de Atacama 37 ANGRA DOS REIS 37 Tacna Peru 37 Instituto de Astrofisica de 37 Andean Amazonian 37 Haquira copper 37 midlatitudes 37 Kazlowski 37 Palaeocene Eocene Thermal Maximum 37 Weddell Sea 37 atmospheric circulations 37 deepwater corals 37 uncontacted Amazon 37 World Agroforestry Centre 37 Mongabay 37 Amazon rainforest 37 Nakanai Mountains 37 fossil vertebrates 37 Laurentide ice sheet 37 Tecnologico de Monterrey 37 Totobiegosode 37 Cauca province 37 Marlon Santi 37 arid semi arid 37 Tumbes 37 ground truthing 36 Palaeontology 36 spatial variability