''Aspidodiadema'' is a genus of

echinoderm An echinoderm () is any animal of the phylum Echinodermata (), which includes starfish, brittle stars, sea urchins, sand dollars and sea cucumbers, as well as the sessile sea lilies or "stone lilies". While bilaterally symmetrical as ...

s belonging to the family Aspidodiadematidae. The species of this genus are found in the Indo-Pacific and Caribbean.

Description

The test is small and subglobular with fragile plating which is firmly tessellated. The apical disc is monocyclic. The plates membrane is embedded and does not touch the coronal plates. The

ambulacral Ambulacral is a term typically used in the context of anatomical parts of the phylum Echinodermata or class Asteroidea and Edrioasteroidea. Echinoderms can have ambulacral parts that include ossicles, plates, spines, and suckers. For example, sea ...

plating is pseudocompound with single large primary tubercle on every third plate which is much enlarged compared to the others. The primary tubercles form an alternate series down the perradius. These traits distinguish this genus from '' Plesiodiadema'' and '' Gymnotiara.'' The primary tubercles are perforated and notched. The secondary tuberculation confined to plate margins. The peristome has shallow, rounded buccal notches. The spines are slender and arranged in whorls. The lumens are filled with a mesh of horizontal dividers and vertical pillars.

Species

The following species are recognised: *'' Aspidodiadema africanum'' *''

Aspidodiadema annulatum ''Aspidodiadema annulatum'' is a species of sea urchin of the family Aspidodiadematidae. Their armour is covered with spines. It is placed in the genus Aspidodiadema and lives in the sea. Aspidodiadema annulatum was first scientifically describ ...

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Aspidodiadema arcitum ''Aspidodiadema arcitum'' is a species of sea urchin of the family Aspidodiadematidae. Their armour is covered with spines. It is placed in the genus Aspidodiadema and lives in the sea. ''Aspidodiadema arcitum'' was first scientifically described ...

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Aspidodiadema hawaiiense ''Aspidodiadema hawaiiense'' is a species of sea urchin of the family Aspidodiadematidae. Their armor is covered with spines. It is placed in the genus Aspidodiadema and lives in the sea. Aspidodiadema hawaiiense was first scientifically descri ...

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Aspidodiadema intermedium ''Aspidodiadema intermedium'' is a species of sea urchin of the family Aspidodiadematidae. Their armour is covered with spines. It is placed in the genus Aspidodiadema and lives in the sea. Aspidodiadema intermedium was first scientifically des ...

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Aspidodiadema jacobyi ''Aspidodiadema jacobyi'' is a small sea urchin in the family Aspidodiadematidae. It lives in tropical seas at great depths. Aspidodiadema jacobyi was first scientifically described in 1880 by Alexander Emanuel Agassiz, an American scientist. ...

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Aspidodiadema meijerei ''Aspidodiadema meijerei'' is a species of sea urchin of the family Aspidodiadematidae. Its armor is covered with spines. It is placed in the genus Aspidodiadema and lives in the sea. Aspidodiadema meijerei was first scientifically described in ...

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Aspidodiadema montanum ''Aspidodiadema montanum'' is a species of sea urchin of the family Aspidodiadematidae. Their armour is covered with spines. It is placed in the genus Aspidodiadema and lives in the sea. Aspidodiadema montanum was first scientifically described ...

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Aspidodiadema multituberculatum ''Aspidodiadema'' is a genus of echinoderms belonging to the family Aspidodiadematidae. The species of this genus are found in the Indo-Pacific and Caribbean. Description The test is small and subglobular with fragile plating which is firmly ...

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Aspidodiadema nicobaricum ''Aspidodiadema nicobaricum'' is a species of sea urchin of the family Aspidodiadematidae. Their armour is covered with spines. It is placed in the genus Aspidodiadema and lives in the sea. Aspidodiadema nicobaricum was first scientifically des ...

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Aspidodiadema sinuosum ''Aspidodiadema sinuosum'' is a species of sea urchin of the family Aspidodiadematidae. Their armour is covered with spines. It is placed in the genus Aspidodiadema and lives in the sea. Aspidodiadema sinuosum was first scientifically describe ...

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Aspidodiadema tonsum ''Aspidodiadema'' is a genus of echinoderms belonging to the family Aspidodiadematidae. The species of this genus are found in the Indo-Pacific and Caribbean. Description The test is small and subglobular with fragile plating which is firmly ...

References

{{Taxonbar, from=Q18583700 Echinoidea genera