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Cifonauta
marine biology image database
11127 photos | 589 videos | 72 tags | 630 species | 89 places
1426 files founds
taxon (genus):
Clypeaster
1426 files
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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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Blastula during hatching
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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 (opposite to mouth).
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Juvenile sea biscuit
Structure in the anal region.
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Pluteus larva of a sea biscuit
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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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Pluteus larva of a sea biscuit
Early stage with two arms (post-oral).
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Pluteus larva of a sea biscuit
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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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Pluteus larva of a sea biscuit
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Pluteus larva of a sea biscuit
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Blastula
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Juvenile sea biscuit
Structure in the anal region.
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Pluteus larva of a sea biscuit
Four-arm stage with a vestibule invagination.
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Sea biscuit metamorphosis
Polarized light highlights the calcareous skeleton showing the structure of spines, podia, and remnants of the larval skeleton.
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Gastrula
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Juvenile sea biscuit
Detail of teeth in the lantern of Aristotle.
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Pluteus larva of a sea biscuit
Frontal view of the eight-arm pluteus larva.
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Pluteus larva of a sea biscuit
Four-arm stage.
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Pluteus larva of a sea biscuit
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Pluteus larva of a sea biscuit
Mouth, esophagus, gut and vestibule invagination (larva left side) during six-arm stage. Anal view.
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Details of gastrula cells
Mesenchymal and ectodermic cells. Some cells have pigmented granules (red).
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Pluteus larva of a sea biscuit
Epithelium.
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Pluteus larva of a sea biscuit
Vestibule invagination in a four-arm pluteus larva.
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Pluteus larva of a sea biscuit
Detail of the vestibule near the left coelom and the central gut during early eight-arm stage.
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Gastrula
Advanced stage with the archenteron near the apical plate.
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Embryo during blastulation
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Juvenile sea biscuit
Ambulacral feet and spines.
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Ovule
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Pluteus larva of a sea biscuit with an extra arm
Arm growing on an unusual site.
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Pluteus larva of a sea biscuit
Stage with four pairs of arms.
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Pluteus larva of a sea biscuit
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4 cell embryo (without fertilization membrane)
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Embryo during sixth cleavage
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Pluteus larva of a sea biscuit
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Embryos during early cleavages
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Pluteus larva of a sea biscuit
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Gastrula
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