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daemon@ATHENA.MIT.EDU (Costco Feedback)
Sat Jan 31 08:55:30 2026

Date: Sat, 31 Jan 2026 07:55:28 -0600
From: "Costco Feedback" <MemberSurveyPanel@trevia.za.com>
Reply-To: "MemberSurveyPanel" <CostcoRewards@trevia.za.com>
To: <linuxch-announce.discuss@charon.mit.edu>

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hurry up ! Rewards have arrived!

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he body wall layers include a thin cuticle, an epidermis consisting of a single layer of cells, a thick dermis formed of connective tissue, a thin coelomic myoepithelial layer for the muscles, and a peritoneum. The dermis contains an endoskeleton of calcium carbonate components known as ossicles. These are honeycomb-like structures composed of calcite microcrystals arranged in a lattice. They vary in form, from flat plates to granules to spines, and cover the aboral surface. Some are specialised structures such as the madreporite (the entrance to the water vascular system), pedicellariae, and paxillae. Paxillae are umbrella-like structures found on starfish that live buried in substrate. The edges of adjacent paxillae meet to form a false cuticle with a water cavity beneath in which the madreporite and delicate gill structures are protected. The ossicles are located under the epidermal layer, even those emerging externally.

Several groups of starfish, including Valvatida and Forcipulatida, possess pedicellariae. These are scissor-like ossicles at the tip of the spine which displace organisms from resting on the starfish's surface. Some species like Labidiaster annulatus and Novodinia antillensis use their pedicellariae to catch prey. There may also be papulae, thin-walled protrusions of the body cavity that reach through the body wall into the surrounding water. These serve a respiratory function. The structures are supported by collagen fibres set at right angles to each other and arranged in a three-dimensional web with the ossicles and papulae in the interstices. This arrangement enables both easy flexion of the arms and the rapid onset of stiffness and rigidity required for some actions performed under str

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<div style="color:#CAD0E6;font-size:8px;">he body wall layers include a thin cuticle, an epidermis consisting of a single layer of cells, a thick dermis formed of connective tissue, a thin coelomic myoepithelial layer for the muscles, and a peritoneum. The dermis contains an endoskeleton of calcium carbonate components known as ossicles. These are honeycomb-like structures composed of calcite microcrystals arranged in a lattice. They vary in form, from flat plates to granules to spines, and cover the aboral surface. Some are specialised structures such as the madreporite (the entrance to the water vascular system), pedicellariae, and paxillae. Paxillae are umbrella-like structures found on starfish that live buried in substrate. The edges of adjacent paxillae meet to form a false cuticle with a water cavity beneath in which the madreporite and delicate gill structures are protected. The ossicles are located under the epidermal layer, even those emerging externally. Several groups of starfish, including Valvatida and Forcipulatida, possess pedicellariae. These are scissor-like ossicles at the tip of the spine which displace organisms from resting on the starfish&#39;s surface. Some species like Labidiaster annulatus and Novodinia antillensis use their pedicellariae to catch prey. There may also be papulae, thin-walled protrusions of the body cavity that reach through the body wall into the surrounding water. These serve a respiratory function. The structures are supported by collagen fibres set at right angles to each other and arranged in a three-dimensional web with the ossicles and papulae in the interstices. This arrangement enables both easy flexion of the arms and the rapid onset of stiffness and rigidity required for some actions performed under str</div>
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