Jean-Baptiste Pierre Antoine de Monet, chevalier de Lamarck, often known simply as Lamarck, was a French naturalist. He was a soldier, biologist, academic, and an early proponent of the idea that biological evolution occurred and proceeded in accordance with natural laws.
Eucidaris tribuloides, the slate pencil urchin, is a species of cidaroid sea urchins that inhabits littoral regions of the Atlantic Ocean. As a member of the basal echinoid order Cidaroida, its morphological, developmental and molecular genetic characteristics make it a phylogenetically interesting species.
Clavatula coronata is a species of sea snails, a marine gastropod mollusc in the family Clavatulidae.
Perrona is a genus of sea snails, marine gastropod mollusks in the family Clavatulidae.
Turritella bicingulata is a species of sea snail, a marine gastropod mollusk in the family Turritellidae.
Ovula is a genus of sea snails, marine gastropod mollusks in the family Ovulidae.
Amblypneustes formosus is a species of sea urchin of the family Temnopleuridae. Their armour is covered with spines. It came from the genus Amblypneustes and lives in the sea. Amblypneustes formosus was first scientifically described in 1846 by Valenciennes.
Amblypneustes pallidus is a species of sea urchin of the family Temnopleuridae. Their armour is covered with spines. It came from the genus Amblypneustes and lives in the sea. Amblypneustes pallidus was first scientifically described in 1816 by Jean-Baptiste de Lamarck.
Tripneustes is a genus of sea urchins belonging to the family Toxopneustidae.
Toxopneustes is a genus of sea urchins from the tropical Indo-Pacific. It contains four species. They are known to possess medically significant venom to humans on their pedicellariae. They are sometimes collectively known as flower urchins, after the most widespread and most commonly encountered species in the genus, the flower urchin. Species included in the genus are the following:
Eucidaris is a genus of cidaroid sea urchins known as slate pencil urchins. They are characterised by a moderately thick test, a usually monocyclic apical disc, perforate and non-crenulate tubercles and nearly straight ambulacra with horizontal pore pairs. The primary spines are few and widely spaced, stout with blunt flat tips and beaded ornamentation and the secondary spines are short and apressed. They originated in the Miocene and extant members of the genus are found in the tropical Indo-Pacific Ocean, East Pacific, Atlantic Ocean and Caribbean Sea.
Astropyga pulvinata is a species of sea urchins of the family Diadematidae. Their armour is covered with spines. Astropyga pulvinata was first scientifically described in 1816 by Jean-Baptiste de Lamarck.
Cassidulus caribaearum is a species of sea urchins of the Family Cassidulidae. Their armour is covered with spines. Cassidulus caribaearum was first scientifically described in 1801 by Jean-Baptiste de Lamarck.
Scutellidae is a family of fossil sand dollars in the superfamily Scutellidea. All genera except Scaphechinus are extinct.
Toxopneustes maculatus is a rare species of sea urchin found in the Indo-West Pacific.
Gracilechinus is a genus of sea urchins in the family Echinidae.
