Best Heart Urchin
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Micraster coranguinum is a Late Cretaceous heart urchin described by Leske in 1778, common in western European chalk and Bronze Age finds.
Echinocardium cordatum is the common heart urchin or sea potato, a burrowing Loveniidae species first described by Thomas Pennant in 1777.
Micraster cortestudinarium is a Cretaceous heart urchin named by Goldfuss in 1826, part of the Micraster lineage used to trace chalk evolution.
The sea potato is a burrowing heart urchin found in the coastal sandy sediments of Europe and Australasia, distinguished by its heart-shaped, dense yellowish-spined skeletal test.
Spatangus purpureus is the purple heart urchin, a Spatangidae species described by O.F. Muller in 1776 and found in the eastern Atlantic and Mediterranean.
Meoma ventricosa is the red heart urchin, a large Caribbean Brissidae species described by Lamarck in 1816 and reaching about 20 cm across.
The red heart urchin is a large, burrowing echinoderm found in the tropical Western Atlantic Ocean, noted for its reddish spines and its crucial role in aerating sandy marine environments.
The purple heart urchin is a marine echinoderm native to the Northeast Atlantic and Mediterranean Sea, recognized by its vividly colored purple spines and its deep-burrowing lifestyle.
Holaster subglobosus is an extinct Cretaceous heart urchin, notable as a chalk fossil in Holaster, an irregular echinoid genus with bilateral symmetry.
Micraster leskei is an extinct irregular sea urchin named for naturalist Nathanael Gottfried Leske and known from marine rocks of the Cretaceous Period.
Abatus shackletoni is a brooding heart urchin from the Schizasteridae family, named in honor of the renowned Antarctic explorer Ernest Shackleton.
Lovenia elongata is a tropical Indo-Pacific heart urchin in Loveniidae, described by Gray in 1845 and often found buried in sediment.
Metalia spatagus is a heart urchin in the family Metaliidae found across the Indo-Pacific, originally described by Carl Linnaeus in 1758.
Schizaster doederleini is a Caribbean heart urchin described by Chesher in 1972; specimens have been collected off Panama at 227 metres.
Brissopsis lyrifera is a heart urchin in the family Brissidae found in the North Atlantic and Mediterranean Sea, where it burrows in soft sediments.
Plagiobrissus grandis is a large western Atlantic Brissidae sea urchin described by Gmelin in 1791 and found from Florida through the Caribbean to Brazil.
Schizaster canaliferus is an older name for Ova canaliferus, a Mediterranean schizasterid described by Lamarck in 1816 with a complete latero-anal fasciole.
Palaeopneustes tholoformis is a deep-sea spatangoid sea urchin described by Chesher and notable as a host for small symbiotic crustaceans.
Meoma grandis is commonly treated as Meoma ventricosa grandis, a Gray 1851 eastern Pacific form recorded from the Gulf of California to 200 m.
Heterobrissus hystrix is a deep-water spatangoid sea urchin distinguished by an irregular, bilaterally symmetrical test adapted for life on soft sediment.
Toxaster retusus is an extinct Cretaceous heart urchin species in Toxaster, a deposit-feeding irregular echinoid genus of shallow marine sediments.
Abatus cordatus is an Antarctic-region schizasterid heart urchin described by Verrill in 1876 and listed from the Kerguelen Islands.
Brissus unicolor is a Brissidae heart urchin described by Leske in 1778, notable as a Mediterranean and Atlantic burrower reaching about 14 cm.
Schizaster floridiensis is a heart urchin described by Kier and Grant in 1965, notable for its occurrence around Florida and the Florida Keys.
Lovenia subcarinata is a species of sea urchin in the family Loveniidae, recognized by its elongated, heart-shaped test and distinct keel.
Lovenia cordiformis is an eastern Pacific heart urchin described by A. Agassiz in 1872 and recorded from sandy seafloors off California and Mexico.
Echinocardium flavescens is the yellow sea potato, a northeast Atlantic heart urchin described by O.F. Muller in 1776 and known from British and Irish waters.
Abatus nimrodi is a species of irregular sea urchin discovered in the Southern Ocean, notable for being named after the historic Antarctic expedition.
Schizaster orbignyanus is a Caribbean heart urchin described by Alexander Agassiz in 1880 from material dredged by the survey vessel Blake.
Echinocardium australe is a species of heart urchin native to the coastal waters of Australia, where it buries itself deeply in the marine sediment.
