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http://commons.wikimedia.org/wiki/File%3AOstracod.JPG

Body Size Evolution of Ostracods

Ostracods, commonly called seed shrimp, are a large and diverse group of crustaceans characterized by their small size and having a carapace composed of two shells.  Two groups of History of Life Interns studied the evolution body size in Ostracoda in 2013.

Figure 1 from Heim et al. 2015. Science 347:867-870.

Publications Using Body Size Data Collected by Interns

Seven years worth of efforts by high school interns, measuring over 36,000 Foraminfera species, 10,000 species of Ostradoca as well as representatives from many other fossil groups has lead to a number of scientific publications on the evolution of body size in marine animals and protists.

http://upload.wikimedia.org/wikipedia/commons/b/b5/Pentasteria_longispina%2C_sta

Body Size Evolution of Echinoderms

Echinoderms are a large, diverse phylum of exclusively marine invertebrate animals.  Echinoderms include groups commonly found in today's oceans like sea stars and sea urchins, groups like the sea lilies (crinoids) that still around today but less common and extinct groups, many of which are bizarre looking.  Five groups of History of Life Interns studied
the evolution body size in Echinodermata in 2013.

Monterey Fm. Clams and Brachs.

Body Size Evolution in Marine Animals

Understanding the evolution of body size in marine animals is one of the main research goals of the Paleobiology Lab and the History of Life Internship Program. We are working to compile as much information as we can on the sizes of marine fossils in order to to gain a global picture of size evolution over the past 540 million years.