Cifonauta

marine biology image database

11127 photos | 589 videos | 72 tags | 630 species | 89 places

1558 files founds

taxon (order):

Clypeasteroida

1558 files

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Pluteus larva of a sea biscuit

Early stage with two arms. Detail of a post-oral arm.

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Pluteus larva of a sea biscuit

Early stage with two arms (post-oral).

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Pluteus larva of a sea biscuit

Growth of antero-lateral pair of arms (2nd pair).

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Ectodermic cells during blastula formation

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Juvenile sea biscuit after metamorphosis

Ossicles of the lantern of Aristotle in formation at the oral region.

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Embryos initiating the first cleavage

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Ectoderm

Many cells with red granules are distributed in the epithelium of the gastrula.

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Pluteus larva of a sea biscuit

Post-oral arms of a six-arm pluteus larva.

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Embryo with 8 cells

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Gastrula

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Juvenile sea biscuit

Structure in the anal region.

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Pluteus larva of a sea biscuit

Stage with four pairs of arms.

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Juvenile sea biscuit

Oral region with the lantern of Aristotle in formation.

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Juvenile sea biscuit

Aboral surface (opposite to mouth).

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Juvenile sea biscuit

Anus on the juvenile aboral surface (red curved structure).

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Pluteus larva of a sea biscuit

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Embryo with 16 cells

Lateral view of mesomeres.

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Blastula

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Malformed blastula

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Juvenile sea biscuit after metamorphosis

Remnants of the larval skeleton in the aboral region of the juvenile.

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Juvenile sea biscuit

Aboral surface.

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Embryo with 32 cells

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Sand dollar

Zygote.

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Pluteus larva of a sea biscuit

Larva with four pairs of arms.

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Juvenile sea biscuit

Oral region with the lantern of Aristotle in formation.

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Pluteus larva of a sea biscuit

Early stage with two arms (post-oral).

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Embryo with 2 cells

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Pluteus larva of a sea biscuit

Growth of antero-lateral pair of arms (2nd pair).

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Sea biscuit gamete release (spawning)

Sperm release by genital papillae.

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Pluteus larva of a sea biscuit

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Ovule

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Juvenile sea biscuit

Podia and spine.

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Embryos initiating the first cleavage

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Pluteus larva of a sea biscuit

Post-oral arm tip in a six-arm pluteus larva.

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Embryo during blastula formation

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Pluteus larva of a sea biscuit

Early 2-arm stage showing the gut between the developing coelomic sacs.

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Pluteus larva of a sea biscuit

Larva with six arms.

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Pluteus larva of a sea biscuit

Microalgae in the larval gut.

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Juvenile sea biscuit

Aboral region.

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Pluteus larva of a sea biscuit

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