Graham Eaton / View towards Cribyn from Pen y Fan in the Brecon Beacons National Park, Wales, September. The outcrops of Devonian age, Old Red Sandstone forms escarpments carved by glaciers during the last ice age.

Will Watson / Boulder in heathland from the Senni Formation. Mudstone layers were deposited in freshwater lakes during the Lower Devonian. Cat's Back, Black Mountains, Herefordshire, England, UK. May.

Graham Eaton / Glacial outwash sand and gravel deposits, Baumaris, Wales, UK, June. These deposits were laid down in a fluvial environment of braided streams near the front of a retreating glacier, during the last I...

Graham Eaton / Triassic age Conglomerate and Sandstone, part of the Otter Sandstone Formation. The conglomerate pebbles mostly comprize quartz and quartzite reaching 20cm in diameter. Budleigh Salterton, Devon, UK,...

Graham Eaton / A Glacial Erratic at Norber near Austwick, Yorkshire, UK. This is one of the Norber erratics, where blocks of older Silurian sandstone were left on top of younger Carboniferous limestone by a retreati...

Matthew Maran / Triassic sandstone cliffs of East Devon, formed 250-260 million years ago and are the oldest on the Jurassic Coast World Heritage Site, Devon, England, UK, November 2016.

John Cancalosi / New red sandstone, cross-bedded sandstone, from the Triassic, Shropshire, England, UK, September.

Franco Banfi / Fossil and illustration of a Lizard fish (Saurichthys curionii) female eating a small male of the same species. The female probably choked while feeding, from the Middle Triassic period, Fossil Museum...

Franco Banfi / Model of Ticinosuco (Ticinosuchus ferox) from the Middle Triassic period, UNESCO World Heritage Site, Fossil Museum of Monte San Giorgio, Ticino, Switzerland.

Franco Banfi / Fossil of a Conifer (Voltzia sp.) branch from the Middle Triassic period, Fossil Museum of Monte San Giorgio, UNESCO World Heritage Site, Ticino, Switzerland.

Franco Banfi / Fossils of marine reptiles (Mixosaurus sp. and Shastasauride) from the Middle Triassic, Fossil Museum of Monte San Giorgio, UNESCO World Heritage Site, Ticino, Switzerland.

Franco Banfi / Fossil of a Rauisuchian archosaur (Ticinosuchus ferox) from the Middle Triassic, Fossil Museum of Monte San Giorgio, UNESCO World Heritage Site, Ticino, Switzerland.

Franco Banfi / Fossil of Bony fish (Archaeosemionotus sp.) from the Middle Triassic, Fossil Museum of Monte San Giorgio, UNESCO World Heritage Site, Ticino, Switzerland.

Franco Banfi / Imprint and model of Proarcestes extralabiatus from the Middle Triassic, Fossil Museum of Monte San Giorgio, UNESCO World Heritage Site, Ticino, Switzerland.

Franco Banfi / Close up of a fossil of a Conifer (Voltzia sp.) branch from the Middle Triassic period, Fossil Museum of Monte San Giorgio, Ticino, Switzerland.

Franco Banfi / Fossil of Neusticosaurus peyeri from sea floor, Middle Triassic, Fossil Museum of Monte San Giorgio, UNESCO World Heritage Site, Ticino, Switzerland.

Franco Banfi / Fossil of a Neusticosaurus peyeri skeleton, Middle Triassic, Fossil Museum of Monte San Giorgio, UNESCO World Heritage Site, Ticino, Switzerland.

Franco Banfi / Fossil of a Ceresiosaurus with several much smaller skeletons of Neusticosaurus. Fossil Museum of Monte San Giorgio, UNESCO World Heritage Site, Ticino, Switzerland.

Franco Banfi / Two marine reptile fossils (Mixosaurus sp). and (Shastasauride) from the Middle Triassic. Fossil Museum of Monte San Giorgio, UNESCO World Heritage Site, Ticino, Switzerland.

Mike Potts / 'World's Loneliest Tree' a Sitka spruce (Picea sitchensis) which is over 200km from nearest tree (Auckland Islands) Campbell Island New Zealand Sub-Antarctic Islands UNESCO World Heritage Site, March...

Mike Potts / 'World's Loneliest Tree' a Sitka spruce (Picea sitchensis) which is over 200km from nearest tree (Auckland Islands) Campbell Island New Zealand Sub-Antarctic Islands UNESCO World Heritage Site, March...

Michel Roggo / Meltwater stream with remains of fuel tanks from the whaling era 1911- 1931 and decaying building occupied by British Antarctic Survey scientists from the 1940s to 1970, Whaler's Bay, Deception Island...

Graham Eaton / Small thrust fault in Ordovician age sedimentary rocks - geological feature caused by horizontal compression of rock layers, resulting in a low angle reverse fault. Cilan Head, Abersoch, Wales, UK. De...

Graham Eaton / Angular unconformity, between the underlying Cambrian age sedimentary rocks and the overlying Ordovician sedimentary rocks. Trwyn Wylfa, Abersoch, Wales, August. An unconformity represents a time ga...

Ingo Arndt / Aerial view of Jellyfish lake, Uet era Ongael, and surrounding rainforest, Palau, Micronesia, April 2009

Graham Eaton / Sea cliffs, geological section through Cambrian and Ordovician sedimentary rocks with faulted monocline fold structure. Rocks include Nant-pig Musdstones, Abersoch, Gwynedd, Wales, UK

Graham Eaton / Cilan Headland, a headland of folded and tilted Cambrian and Ordovician age sedimentary rocks, Abersoch, Gwynedd, Wales, UK, August 2016.

Graham Eaton / Steeply dipping beds of Silurian age turbidite sediments, Clarach Bay, Aberystwyth, Wales, UK, September 2014.

Chris Mattison / Sedimentary rocks, consisting of Carboniferous limestone overlaid with Jurassic sandstone. Southerndown bedding planes, Dunraven Bay, Glamorgan, UK, January 2017.

Jen Guyton / Goat standing on the porch of a colonial Portuguese-era building has been damaged by civil war and neglect on Ibo Island, Quirimbas Archipelago, northern Mozambique.

Pascal Kobeh / Mayan skull, possibly result of human sacrifice to the gods that the Maya culture made and then threw in cenote, Prehispanic Era, Punta Laguna Cenote, Yucatan peninsula, Mexico

Pascal Kobeh / Mayan human and animal skulls and bones, possibly result of human sacrifice to the gods that the Maya culture made and then threw in cenote, pre-Hispanic era, Punta Laguna Cenote, Yucatan peninsula, M...

Pascal Kobeh / Mayan skull, possibly result of human sacrifice to the gods that the Maya culture made and then threw in cenote, pre-Hispanic era, Punta Laguna Cenote, Yucatan peninsula, Mexico

Pascal Kobeh / Mayan human skull and bones, possibly result of human sacrifice to the gods that the Maya culture made and then thrown into cenote, pre-Hispanic era, Punta Laguna Cenote, Yucatan peninsula, Mexico

Paul D Stewart / Woodblock illustration of Sea Hares from Ortus (Hortus) Sanitatis 1491 - translated from the Latin as 'Garden of Health'. During the middle ages all manner of land animals were thought to have their o...

Paul D Stewart / Woodblock illustration of Mandrake (Mandragora) from two pages of the Ortus (Hortus) sanitatis - translated from the Latin as 'Garden of Health' by Jacob Meydenbach, 1491. He describes plants and anim...

Adrian Davies / Fossil coral (Hexagonaria sp) Devonian period, from Southern Morocco

Bernard Castelein / Janakcham (monastic dance). This dance has been performed from the beginning of Buddhist era in order to serve mankind and to restore peace in the animal kingdom. The dancers are wearing Tantric costu...

Bernard Castelein / Janakcham (monastic dance). This dance has been performed from the beginning of Buddhist era in order to serve mankind and to restore peace in the animal kingdom. The dancers are wearing Tantric costu...

Bernard Castelein / Janakcham (monastic dance). This dance has been performed from the beginning of Buddhist era in order to serve mankind and to restore peace in the animal kingdom. The dancers are wearing Tantric costu...

Bernard Castelein / Janakcham (monastic dance). This dance has been performed from the beginning of Buddhist era in order to serve mankind and to restore peace in the animal kingdom. The dancers are wearing Tantric costu...

Bernard Castelein / Janakcham (monastic dance). This dance has been performed from the beginning of Buddhist era in order to serve mankind and to restore peace in the animal kingdom. The dancers are wearing Tantric costu...

Bernard Castelein / Janakcham (monastic dance). This dance has been performed from the beginning of Buddhist era in order to serve mankind and to restore peace in the animal kingdom. The dancers are wearing Tantric costu...

Christophe Courteau / Monument commemorating dead whalers from the Arctic whaling era, 1600-1750, Magdalena's Bay, Spitzbergen, Svalbard, Norway, June, 2012.

Kristel Richard / Bas-reliefs with soldiers in horse-drawn carriages, decorating the ground level of the temple at Angkor Wat, Angkor, Cambodia. March 2013

Kristel Richard / Bas-reliefs with soldiers in horse-drawn carriages, decorating the ground level of the temple at Angkor Wat, Angkor, Cambodia. March 2013

Kristel Richard / Rhesus macaque (Macaca mulatta) male in front of Angkor Wat temple, Angkor, Cambodia. March 2013

Alex Mustard / Medieval mill building, now partly flooded in Capodacqua lake. Gran Sasso National Park, Abruzzo, Italy.

Alex Mustard / Diver photographs mediaeval mill building, now flooded in Capodacqua lake. Gran Sasso National Park, Abruzzo, Italy.

Claudio Contreras / Calakmul, ancient Maya city surrounded by tropical rainforest, Calakmul Biosphere Reserve, Yucatan Peninsula, Mexico, August

Franco Banfi / The inside of the old Roman 'murenario' a man made cave which served as a private pool for Roman nobles, Ponza Island, Italy, Tyrrhenian Sea, Mediterranean, July 2008

Gavin Hellier / World Ocean Museum, Soviet era submarine, Kaliningrad / Konigsberg, Russia 2008

Jabruson / Mopaka or Mokaka tree (Guibourtia demeusei) trunk with solidified 'Paka' resin. The resin 'Paka' is used by the Ba'Aka people like a candle for light and to ignite fires. During the colonial era, the...

Juan Carlos Munoz / Fossil of the seed fern (Eusphenopteris striata) from the Pennsylvanian period of the Carboniferous era.

Juan Carlos Munoz / Fossil of a Scallop shell (Pecten sp) from the lower Cretaceous era

Mark Hamblin / 2020VISION / Rowan (Sorbus aucuparia), fresh leaves in spring rain, Beinn Eighe NNR, Highlands, NW Scotland, UK, May. Did you know? In the Victoria era, twigs of the Rowan were thought to ward off evil spirits.

Bryan and Cherry Alexander / Remains of the railway bridge built by prisoners in the Stalin era between Nadym & Salekhard. Yamal, Western Siberia, Russia, February 2009.

Bryan and Cherry Alexander / Remains of a wooden building at a prison camp from the Stalin era near Yarudey. Yamal, Western Siberia, Russia, February 2009.

Bryan and Cherry Alexander / Guard post at a prison camp from the Stalin era near Yarudey. Yamal, Western Siberia, Russia, February 2009.

Philippe Clement / The Rock of Falize, a Frasnian limestone anticline (convex geological fold) from the Devonian era. Durbuy, Belgium

Philippe Clement / The Rock of Falize, a Frasnian limestone anticline (convex geological fold) from the Devonian era. Durbuy, Belgium

Bryan and Cherry Alexander / Disused nodding donkey oil pump near Katangli, a relic of oil production during the Soviet Era. Sakhalin Island, Russian Far East, 2006.

Nick Upton / Petrified tree trunk from Miocene era c. 20 mya broken into sections. Lesbos Petrified Forest European and Global Geopark. Eressos, Isle of Lesvos, Greece August 2009

Nick Upton / Petrified tree stump with clear annual growth rings, from Miocene era c. 20 mya. Lesbos Petrified Forest European and Global Geopark. Eressos, Isle of Lesvos, Greece August 2009

Nick Upton / Two petrified trees from Miocene era c. 20 mya. Lesbos Petrified Forest European and Global Geopark. Eressos, Isle of Lesvos, Greece August 2009

Nick Upton / Petrified tree from Miocene era c 20 mya. Lesbos Petrified Forest European and Global Geopark. Eressos, Isle of Lesvos, Greece, August 2009

John Cancalosi / Fossil Crinoid from the Jurassic era, Germany

John Cancalosi / Fossil of Crinoid {Jimbacrinus bostocki} from Permian era, Gascoyne River, Western Australia

John Cancalosi / Fossilized moth {Lepidoptera} from the cretaceous era, Brazil

John Cancalosi / Fossilized shrimp {Eryon Arctiformis} Cretaceous era, Solnhofen, West Germany

Piotr Naskrecki / Velvet Worm, modern Velvet Worms appear to be remarkably similar to fossil forms dating back as far as the Cambrian Era, 530 million years ago, Queensland, Australia

Piotr Naskrecki / Velvet Worm, modern Velvet Worms appear to be remarkably similar to fossil forms dating back as far as the Cambrian Era, 530 million years ago, Queensland, Australia

Piotr Naskrecki / Velvet Worm, modern Velvet Worms appear to be remarkably similar to fossil forms dating back as far as the Cambrian Era, 530 million years ago, Queensland, Australia

Colin Monteath / Sperm Whale (Physeter macrocephalus) teeth with Scrimshaw artwork sitting atop whale vertebrae, dates from 1840's whaling era, Fyffe Historic House, Kaikoura, New Zealand

SINCLAIR STAMMERS / Coastline by Culver cliff, Isle of Wight. In the Early Cretaceous era Wealden clays was a tropical lakebed. Fossilized dinosaur footprints can now be found amongst loose boulders at the toe of the cli...

Nick Turner / Communist era factory beside forest, Carpathian mountains, Romania,

Sumio Harada / Trilobite (Olenoides sp) fossil from the Middle Cambrian era, specimen from the Rocky Mountains, North America

Sumio Harada / Trilobite (Olenoides sp) fossil from the Middle Cambrian era, specimen from the Rocky Mountains, North America

John Cancalosi / Fossil of Eocene era bat {Palaeochiropteryx tupaiodon} Messel, Germany

Paul D Stewart / Photographic portrait of Richard Owen (20, July 1804- 18 December 1892). Woodburytype photograph by Lock & Whitfield published in 'Men or Mark' 1878. Owen was a comparative anatomist and palaeontologi...

Paul D Stewart / Illustrated portraits of Richard Owen (20, July 1804- 18 December 1892) and Thomas Henry Huxley (4 May 1825 - 29 June 1895). Linley Sambourne's illustration for the new 1885 Macmillan edition of Kings...

Paul D Stewart / Portrait of Richard Owen (20, July 1804- 18 December 1892); 1883 portrait in his home study for The Graphic magazine, in the year he retired from the BMNH. Owen was a comparative anatomist and palaeon...

Paul D Stewart / Portrait of Richard Owen (20, July 1804- 18 December 1892), 1889 mezzotint by H.J. Thaddeus with contemporary face but pose taken from an earlier 1852 photograph with dinosaur. Owen was a comparative...

Paul D Stewart / Portrait of Richard Owen and Moa leg (20, July 1804 - 18 December 1892) photo-engraved by Walker and Boutall around 1894 from an 1846 Daguerrotype. Owen was a comparative anatomist and palaeontologist...

Colin Monteath / Baleen plates from whale mouth, dates from 1840's whaling era, Kaikoura, New Zealand

John Cancalosi / Fossil trilobite {Conocoryphe sp} from Cambrian Era, Eastern Europe

Philippe Clement / Urvogel, Berlin Archaeopteryx specimen (Archaeopteryx siemensii), replica of transitional fossil of bird-like dinosaur, Late Jurassic period. May, 2023.

Philippe Clement / Bothriolepis canadensis fossil, antiarch placoderms that lived during the Middle to Late Devonian period of the Paleozoic Era, Canada. May, 2023.

Philippe Clement / Eurasian cave lion (Panthera spelaea) skull fossil from the Late Pleistocene, Europe. May, 2023.

Philippe Clement / Fossilised vertebrae of Otodus obliquus, extinct cosmopolitan genus of Mackerel shark, Eocene period, Morocco. May, 2023.

Philippe Clement / Grallator fossilised foot print, three-toed print made by a bipedal theropod dinosaur, Late Triassic or Early Cretaceous period.

Philippe Clement / Acadoparadoxides briareus fossil, extinct genus of Redlichiid trilobite belonging to the family Paradoxididae, Middle Cambrian period. May, 2023.

Philippe Clement / Cockerellites liops / Priscacara liops fossil, extinct temperate bass fish from early Eocene found in the Green River Formation of Wyoming, USA. May, 2023.

Philippe Clement / Cyclerion propinquus fossil, extinct genus of decapod crustaceans, epifaunal carnivores which lived during the Jurassic period. May, 2023.

Philippe Clement / Dactylioceras, widespread genus of ammonites, index fossil from the Lower Jurassic period. May, 2023.