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  2. Sand dollar - Wikipedia

    en.wikipedia.org/wiki/Sand_dollar

    Sand dollars diverged from the other irregular echinoids, namely the cassiduloids, during the early Jurassic, [5] with the first true sand dollar genus, Togocyamus, arising during the Paleocene. Soon after Togocyamus, more modern-looking groups emerged during the Eocene. [1] Sand dollars are small in size, averaging from 80 to 100 mm (3 to 4 ...

  3. Heliophora - Wikipedia

    en.wikipedia.org/wiki/Heliophora

    Heliophora orbicularis, also known as the West African Sand Dollar, is a small sand dollar in to the family Rotulidae, and the only species in the genus Heliophora. It, and other members of Rotulidae have been found in West African marine strata from the Late Miocene onward.

  4. Echinarachnius parma - Wikipedia

    en.wikipedia.org/wiki/Echinarachnius_parma

    The tests (shells) of these sand dollars are round, flat and disc-like, typically measuring 3 inches (7.6 cm) in diameter. The growth rate for this animal is between 3.5 to 6 mm/yr in the latter 5 years of their lifespan, and the lifespan is typically around 8 years. [2]

  5. Bonaire: Why so many visitors want to move to this ... - AOL

    www.aol.com/bonaire-why-many-visitors-want...

    Then, in 1999, the Bonaire government purchased Klein Bonaire (an uninhabited island a half mile offshore) from the private sector for $4.6 million with the agreement that it would remain a ...

  6. Clypeasteridae - Wikipedia

    en.wikipedia.org/wiki/Clypeasteridae

    Clypeasteridae is a family of sea urchins in the order Clypeasteroida.This family was first scientifically described in 1835 by the Swiss-American biologist Louis Agassiz.. The clypeasteridae also known as the sand dollar, are round and semi-flat organisms with spines lining the underside of the body and elongated genital papillae aiding its survival and reproduction.

  7. Rotulidae - Wikipedia

    en.wikipedia.org/wiki/Rotulidae

    Rotulidae is a family of small sand dollars native to the Atlantic coast of Africa, with 3 genera, with Rotula and Heliophora being extant, the other, Rotuloidea, being extinct since the Pliocene, but all three being found in the fossil record along the Atlantic African coast since the Miocene.

  8. Keyhole sand dollar - Wikipedia

    en.wikipedia.org/wiki/Keyhole_sand_dollar

    Keyhole sand dollar refers to five living species of sand dollars in the genus Mellita, plus the extinct †Mellita aclinensis.They are found on the Atlantic coasts of the Americas, ranging across the Caribbean Islands (e.g. Bermuda, Jamaica and Puerto Rico), from the southern United States at the north, to the southeastern coast of Brazil at the south.

  9. Sitting Too Much Can Increase the Risk of Heart Problems ...

    www.aol.com/sitting-too-much-increase-risk...

    Get organizers for all of your Christmas decorations on sale now for as low as $10. AOL. This foldable storage shelf is on sale for under $60: 'It is like a magic act' AOL.

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