<i>In situ</i> eggs within the Comahue campus.

<p><i>In situ</i> association in bedding plane (<i>a</i>), inset of single egg in position (<i>b</i>), egg half-buried in sediment (typical for almost all eggs collected) (<i>c</i>), close up lateral view of same egg showing degree of asymmetry (<i>d</i>).</p>