Echinoid Collection

Tylocidaris clavigera, sea urchin
A fossil echinoid (Tylocidaris clavigera) from the Cretaceous rocks of Gravesend, England

Temnocidaris sceptrifera, fossil echinoid
Temnocidaris (Stereocidaris) sceptrifera, 5.5 cm in diameter, from the Cretaceous Chalk of Hertfordshire, England, apical view

Crinoids
Criniods lived during the Lower Jurassic period. Their modern equivalents include echinoderms such as seaurchins, starfish and sea cucumbers

Eucidaris tribuloides, sea urchin
Dead sea urchin (Eucidaris tribuloides) showing spines attached to test. From Carrie Bow Cay, Belize

Conulus albogalerus (Leske), Shepherds Crown echinoid
Shepherds Crown echinoid preserved in flint. Found in Gravel derived from Cretaceous Chalk, Surrey

Micraster coranguinum (Leske), shepherds crown echinoid
Shepherds crown echinoid (Micraster coranguinum Leske) preserved in flint. Specimen from the Cretaceous Upper Chalk, England

Conulus albogalerus (Leske), Shepherds Crown echinoid
Shepherds Crown echinoid preserved in flint. Found in Gravel derived from Cretaceous Chalk, Surrey

Flint handaxe incorporating fossil echinoid
Cast of handaxe from Middle Gravels of Swanscombe, Kent. Loaned by Merseyside Museums; NHM E6870

Clypeus ploti, fossil echinoid
Fossil echinoid also known as a poundstone from the Jurassic period Trigonia Grit, Aylworth, U.K

Clypeaster altus, a fossil echinoid
Clypeaster altus, 13 cm anterior to posterior, from the Miocene of Malta, oral view

Black spiny urchins graze on algae on the seafloor in Indonesia
Black spiny urchins (Diadema sp.) graze on algae on a sand and rubble seafloor in Indonesia. Urchins are often found in disturbed areas due to algae being prominent there

Archaeocidaris (Sea urchin) fossilised in limestone, Carboniferous era

Fossilised Echinoid (Plegiocidaris) showing position of apical disc

Cystoid (Lepadocrinite) fossilised in Wenlock limestone, featuring theca

Lovenia (Heart urchin) fossilised in limestone, Miocene era

Tylocidaris Echinoid fossil in chalk

Flint handaxe with fossil echinoid C016 / 6004
Cat of a flint handaxe incorporating a fossil echinoid. Specimen from the Middle Gravels of Swanscombe, Kent

Sea urchin spine fossils C016 / 5996
Sea urchin spine fossils, also known as Jew stones

Fragments of fossil crinoids, artwork C013 / 6796
Fossil crinoid fragments, watercolour by Sarah Stone (1760-1844). Crinoids, or sea lilies, are marine echinoderms that have been in existence for 500 million years

Fossil crinoid, artwork C013 / 6790
Fossil crinoid, watercolour by Sarah Stone (1760-1844). Crinoids, or sea lilies, are marine echinoderms that have been in existence for 500 million years

Sea urchin fossil C013 / 6620
Sea urchin (Tylocidaris clavigera) fossil in chalk. This sea urchin had bulb-like spines. This fossil dates to the Upper Cretaceous period, around 80 to 83 million years ago

Fossil crinoids C013 / 6509
Fossil crinoids. Crinoids, or sea lilies, are marine echinoderms that have been in existence for 500 million years. They attach themselves to the sea floor with their stems

Pteraster acicula, starfish
Pteraster acicula from the classification Asteroidea: Spinulosida: Pterasteridae. This species of starfish is found from Florida to the west Gulf of Mexico, below 260m

Eucidaris tribuloides, sea urchin
Dead sea urchin (Eucidaris tribuloides) showing spines attached to test. From Carrie Bow Cay, Belize

Echinocorys scutata Leske, fairy loaf echinoid
A fairy loaf echinoid from the Cretaceous Chalk, Coranguinum Zone, Northfleet, Kent

Tylocidaris clavigera (Konig), sea-urchin
This sea-urchin has highly characteristic club-like spines and is 80-83m yrs old. Specimen originates from the Upper Cretaceous Upper Chalk, S. England

Cheiracanthus murchisoni, fossil fish
This is an early jawed acanthodian fish from the Devonian rocks of Banffshire Scotland. Length 5 cms

Micraster coranguinum, echinoid
This a common heart-shaped Cretaceous sea-urchin originates from the Upper Chalk. This specimen is preserved in its original calcite and its length is around 6cm

Hemicidaris intermedi, Jurassic sea urchin
This specimen is particularly well-preserved retaining its spines where they fell around the animal as it died

Plegiocidaris coronata, sea urchin
A fossil echinoid or sea-urchin from the Jurassic rocks of Ulm, Germany

Echinocarys, echinoid hoax
A hoax fossil echinoid found at Piltdown, Sussex. Specimen now held at the Natural History Museum, London

Centrostephanus longispina, echinoid
The echinoid (Centrostephanus longispina). A recent echinoid found in the Mediterranean and East Atlantic. Specimen held at the Natural History Museum, London

Sea urchins
Plate 6 from Voyage sur la Venus (1840-1864) by A. A. Dupetit-Thouars

Jew Stones or sea urchin spines
Unidentified specimens of sea urchin spines possibly from Balanocidaris glandaria Leske, a Cretaceous echinoid found in Palestine

Diadema antillarum Philippi, sea-urchin
Diadema antillarum echinoid, a shallow-water regular echinoid with a formidable array of needle-sharp spines. This species tends to congregate into herds for added protection

Pentacrinites fossilis, crinoid
Crinoids are ancient, marine organisms. Pentacrinites fossilis was unusual in that it lived suspended from floating driftwood (seen here attached to a log)

Archastropecten cotteswoldiae, starfish
A fossil starfish of the subclass Asteroidea from the Jurassic rocks of Gloucestershire, England

Sterna forsteri, Forsters tern, Sterna trudeaui, Trudeau s
Plate 408 from John James Audubons Birds of America, original double elephant folio (1835-38), hand-coloured aquatint. Engraved, printed and coloured by R. Havell (& Son), London

Sand Dollar - Punta Colorado - Sea of Cortez - Baja California - Mexico
SE-1370 Sand Dollar Punta Colorado - Sea of Cortez - Baja California - Mexico Suzi Eszterhas contact details: prints@ardea.com tel: +44 (0) 20 8318 1401

Red sea urchin (Strongylocentrotus franciscanus) amongst purple sea urchins (Strongylocentrotus purpuratus) in a tide pool at low tide

Red sea urchin (Astropyga radiata). Photographed in Lembeh Strait, Sulawesi, Indonesia

Flower urchin (Toxopneustes pileolus). This sea urchin is very poisonous and lethal to humans. Sea urchins feed mainly on algae, but will also eat invertebrates such as mussels

Zebra crab on a fire urchin
Zebra crab (striped) on a fire urchin (Asthonosoma varium). Zebra crabs (Zebrida adamsii) live on sea urchins and are found throughout the Indo-Pacific

1697 Fossil sea urchin Clypheus from Plot
The Jurassic fossil sea urchin Clypheus ploti is shown on top of the engraving from 1697 where Robert Plot illustrates the species for the first time in his " Natural History of

Zebra crab on a sea urchin. Zebra crabs (Zebrida adamsii) live on sea urchins and are found throughout the Indo-Pacific. Photographed in Lembeh Strait, North Sulawesi, Indonesia

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"Echinoids: A Fascinating World of Ancient and Modern Sea Urchins" Meet Tylocidaris clavigera, a remarkable species of sea urchin known for its spiky appearance and vibrant colors. Temnocidaris sceptrifera, a fossil echinoid that offers us a glimpse into the ancient marine life that once thrived on our planet. Crinoids, often mistaken for plants, are actually distant relatives of echinoids with delicate feathery arms swaying in ocean currents. Eucidaris tribuloides, an enchanting sea urchin found in tropical waters, showcases intricate patterns and formidable spines for protection. Micraster coranguinum (Leske), commonly referred to as the shepherds crown echinoid, is an exquisite example of nature's craftsmanship. Conulus albogalerus (Leske), another member of the Shepherds Crown family, displays stunning symmetry and intricate designs on its surface. Clypeaster altus takes us back in time as we explore this fossilized echinoid shell from ages past - a testament to Earth's rich history. Echinocorys scutata Leske introduces us to the fairy loaf echinoid with its distinctive shape resembling a whimsical pastry delight. Clypeus ploti reveals itself as yet another fascinating fossil echinoid specimen that captivates with its unique features frozen in time. Discover the unexpected beauty within flint handaxes incorporating fragments of fossil echinoids - evidence of early human fascination with these creatures. From ancient fossils to living wonders beneath the waves today, echinoids continue to amaze us with their diversity and resilience throughout millions of years on Earth's ever-changing stage.