Mesozoic Collection (#4)

Urogomphus eximus, dragonfly fossil C016 / 4971
Urogomphus eximus, dragonfly fossil. This specimen dates from the Jurassic, about 140 million years ago. It was found in Kimmeridgian Lithographic Stone, in the Solenhofen region of Bavaria, Germany

Pholiodophorus bechei, fish fossil C016 / 4937
Pholiodophorus bechei, fish fossil. This fossil is from the Jurassic rocks near Lyme Regis, Dorset, UK. This specimen is part of the collections held at the Natural History Museum, London, UK

Credneria triacuminata, leaf fossil C016 / 4948
Credneria triacuminata, leaf fossil. Large leaves are indicative of humid tropical climates. This specimen is approximately 17 centimetres across

Petrified conifer, tree trunk fossil C016 / 4912
Petrified conifer. Polished section of a fossil of the trunk of the conifer Araucarioxylon arizxonicum. This is the dominant conifer of Petrified Forest National Park, Arizona, USA

Lepidotes, fish fossils C016 / 4854
Lepidotes, fish fossils. These fossils date from the Jurassic period. These specimens are part of the collections held at the Natural History Museum, London, UK

Dapedium orbicularis, fish fossil C016 / 4835
Dapedium orbicularis, fish fossil. Well-preserved example of a fossil of an enamel-scaled fish from the Early Jurassic. It was found in Lower Lias rocks in Lyme Regis, Dorset, UK

Tyrannosaur rex head C016 / 4203
The head of an animated model of the dinosaur Tyrannosaurus rex, created by Kokoro Ltd of Japan for the Natural History Museum, London, UK. Tyrannosaurus lived between 67 and 65 million years ago

Calyptrella tenuissima
Glass sponge fossil which died on the seabed 80 million years ago

Cynognathus crateronotus
A fossil skull that belonged to the extinct mammal-like reptile, Cynognathus. It lived during the Triassic period, 245 to 208 million years ago. Typical length of entire creature 1.8 metres

Belemnotheutis antiquus
A well-preserved Upper Jurassic squid aged 160 million years. This specimen originates from the famous clay deposits in Wiltshire

Ichthyosaur
A plastic toy model of the extinct marine reptile, Ichthyosaur, created by Invicta Ltd. These reptiles lived during the Jurassic and Triassic periods, becoming extinct around 90 million years ago

Fish Dapedium
Well preserved Dapedium fish from the Jurassic period

Heterodontosaurus
This dinosaur whose name means different-toothed lizard is a member was an Ornithopod. It lived during the Lower Jurassic period around 205-180 million years ago

Opalised snails and clam
Found in the South Australia town of Coober Pedy, these ancient snail and clam shells have been preserved in semi-precious opal

Protocaratops skull from Mongolia
This dinosaur lived during the Cretaceous period about 80 million years ago. This skull. roughly the size of a bear s, was found in Mongolia

Tyrannosaurus rex eye
Graphic of Tyrannosaurus rex eye. It is believed that the eye sight of this dinosaur was well adapted to hunting. It also had a large olfactory cavity creating a strong sense of smell

Fossilised Mesturus verrucosus
Fossilised fish from upper Jurassic lithographic limestone, Eichstadt, Germany. 150 million years ago

Steneosaurus bollensis
A replica fossil specimen of Steneosaurus bollensis, an extinct reptile that looked similar to the modern day crocodile. It lived during the Upper Jurassic period

Proganochelys quenstedti (Baur, 1887) skull
A fossil skull that once belonged to the oldest known extinct turtle, Proganochelys quenstedti. This specimen is from the Keuper at Wurttemberg. Cast on the right, original specimen on the left

Rhomdeosaurus cramptoni [Kettleness specimen]
Close-up of of a section of foot belonging to the Pliosaur, Rhomdeosaurus cramptoni. This carnivorous marine reptile descended from the plesiosaur

Sabatinca perveta, moth
Shown here is a moth belonging to the living pollen-feeding family Micropterygidae, preserved in Burmese amber of Late Cretaceous age

Brasilia bradfordensis, ammonite
This Middle Jurassic ammonite has been sectioned to show its chambers with calcite crystals formed in some and hardened mud in others. The body chamber is missing

Parkinsonia dorsetensis, ammonite
This ammonite has an evolute shell and is displaying complex suture lines. Specimen originates from the Middle Jurassic

Aegocrioceras quadratus, ammonite
This Lower Cretaceous crytocone ammonite displays whorls which do not touch each other but form an open spiral

Platanus latifolia, fossil plane tree leaf from the Upper Cretaceous from Greenland. Specimen 170 mms left to right

Homoeosaurus maximiliani
A fossil specimen of Homoeosaurus maximiliani, a Sphenodontid lizard which dates back to the Triassic period. This specimen was discovered at the Kimeridgian Lithographic stone, Kelheim, Bavaria

Baryonyx fossil remains
Plan of the crazy paving of blocks containing Baryonyx bones at the brick pit excavation site at Ockley, Surrey, UK. This was excavated in 1983 where a Baryonyx specimen was discovered

Titanopteryx philadelphiae wing bones
From a pterodactyloid pterosaur from the late Cretaceous in Jordan. Upper bones are fragments of the elbow joint. The lower from a finger bone which formed a wing support

Sauropod excavation, 1982

Chrysobotris, fossil beetle
An early Cretaceous fossil beetle from the Lithographic Limestone, Lerida, Spain

Ardeosaurus brevipes, a Jurassic lizard
A cast of the type skeleton of Ardeosaurus brevipes a fossil reptile from the Lithographic Limestone, Kimmeridgian, Workerstzell, Bavaria, Germany. Dating back the Upper Jurassic period about 150 mya

Dicroidium sp. seed fern
Fossil Triassic plant from Queensland, Australia

Rhamphorynchus longiceps
A fossil Jurassic pterosaur from the Lithographic Stone, Eichstatt, Germany

Pelorosaurus teeth
These robust chopping teeth from Pelorosaurus, a sauropod, show where the outer enamel has been worn away by constant chopping at plants. This dinosaur lived 130 to 112 million years ago

Excavating a Mosasaur skull
Title page picture from Histoire Naturelle de la Montagne de St Pierre de Maestricht by Faujas de Saint Fond, 1799. Mosasaur was a carnivorous marine reptile from the Cretaceous period

Geosaurus gracilis
The fossil skeleton of the Geosaurus gracilis, an extinct aquatic crocodylian which lived during the Upper Jurassic and Lower Cretaceous periods

Hastings amber
This amber is from the Lower Cretaceous rocks of Hastings, East Sussex. Amber is fossilised tree resin

Oxynoticeras oxynotum, ammonite
Shown here is the ventral view of this Lower Jurassic oxycone ammonite

Aulacostephanus autissiodorensis, ammonite
Shown here is an Upper Jurassic macroconch (larger form) ammonite. Despite some damage to the shell, the fine ribbing is still apparent

Triassic and Devonian rocks
An angular unconformity between two rock formations: Triassic rocks (horizontal) on Devonian rocks (inclined at about 40 degrees), western England, UK

Ostracods
Small arthropods with two valves. These examples are Jurassic in age

Gryphaea incurva, oyster
Fossil oyster also known as the Devils Toenail, specimen from the Lower Lias, Gloucestershire

Leedsichthys problematicus
Fossilised tail of a Leedsichthys problematicus, the giant Middle Jurassic fish which is the largest fish known to have ever inhabited the Earths oceans

Diplodocus skeleton
Weighing around 20 tonnes & reaching up to 26 metres in length Diplodocus is one of the worlds longest dinosaurs to have been discovered. It was first described by Marsh in 1878

Gallimimus
Outline illustration of a Gallimimus

Plagiostoma, fossil shell
This shell of Plagiostoma from the British Jurassic measures 8.5 cm wide and shows radial ornamentation and growth banding

Gonioteuthis, a fossil belemnite
Guard of the belemnite Gonioteuthis, 8 cm long, from the Cretaceous Chalk of Salisbury, England

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Step back in time to the Mesozoic era, where ancient creatures roamed the Earth's oceans and land. Among them were magnificent marine reptiles like the Ichthyosaurus and Plesiosaurus, now long extinct but forever etched in history. These fascinating beings ruled the seas with their sleek bodies and powerful fins, leaving behind a legacy of awe-inspiring fossils. One such fossil is that of Asteroceras, an ammonite from this bygone era. Its intricate spiral shell tells tales of a world we can only imagine. On land, towering giants like Diplodocus grazed upon lush vegetation while fearsome predators like Spinosaurus prowled nearby. Through captivating artwork, we catch a glimpse into their majestic existence. But it wasn't just these remarkable creatures that defined the Mesozoic period; it was also marked by significant geological events. Continental drift reshaped our planet around 100 million years ago, altering landscapes and creating new habitats for life to thrive. This phenomenon allowed species like Ichthyosaurus acutirostris to adapt and evolve in different regions across the globe. In addition to marine reptiles and dinosaurs, birds began taking flight during this time as well. Archaeopteryx emerged as one of nature's early experiments with flight – a mesmerizing blend of avian features fused with reptilian characteristics. And let us not forget about Pterodactyls soaring through prehistoric skies with their impressive wingspans. The Kelloways Stone serves as another testament to this extraordinary epoch – a treasure trove containing countless remnants from this distant past preserved within its layers. It holds secrets waiting to be discovered by intrepid paleontologists who seek answers about our planet's ancient inhabitants. As we delve into the wonders times, we are reminded that our world has undergone incredible transformations throughout history – both on land and beneath vast oceans - leaving behind imprints of extraordinary life forms that continue to captivate our imaginations.