Question
These organisms’ eyes possessed calcite lenses and were some of the first examples of compound eyes. For 10 points each:
[10m] Identify this class of extinct ancient marine arthropods. They contain a hard exoskeleton and have a body divided into three sections.
ANSWER: trilobites [or Trilobita]
[10e] Trilobites first evolved during this geological period where most extant animal phyla emerged. This geological period saw the rapid diversification of life in its namesake “explosion.”
ANSWER: Cambrian period [accept the Cambrian explosion]
[10h] Because of their wide distribution and sudden appearance, trilobites are often used as these types of standard fossils. These fossils are contrasted with zone fossil, which help determine a fossil’s biozone.
ANSWER: index fossils [accept guide or indicator fossils]
<Biology>
Summary
| 2024 ACF Fall at Cornell | fall | Y | 9 | 21.11 | 100% | 89% | 22% |
| 2024 ACF Fall at Ohio State | fall | Y | 8 | 17.50 | 100% | 75% | 0% |
| 2024 ACF Fall at Washington | fall | Y | 6 | 16.67 | 100% | 67% | 0% |
| 2024 ACF Fall at Georgia | fall | Y | 11 | 19.09 | 100% | 55% | 36% |
| 2024 ACF Fall at North Carolina | fall | Y | 9 | 15.56 | 89% | 44% | 22% |
| 2024 ACF Fall at Claremont Colleges | fall | Y | 5 | 26.00 | 100% | 100% | 60% |
| 2024 ACF Fall at Rutgers | fall | Y | 8 | 17.50 | 100% | 50% | 25% |
Data
| Binghamton A | RIT C | 10 | 10 | 0 | 20 |
| Binghamton B | Cornell E | 10 | 10 | 0 | 20 |
| Cornell C | Binghamton C | 10 | 10 | 10 | 30 |
| Cornell A | Cornell D | 0 | 10 | 0 | 10 |
| RIT A | Cornell B | 10 | 10 | 0 | 20 |
| Penn State | Cornell F | 10 | 10 | 0 | 20 |
| Cornell G | ESF | 10 | 10 | 10 | 30 |
| Syracuse | U of Rochester A | 10 | 10 | 0 | 20 |
| RIT B | U of Rochester B | 10 | 10 | 0 | 20 |
| CWRU A (UG) | Michigan C | 0 | 10 | 0 | 10 |
| CWRU B (DII) | CWRU C (UG) | 10 | 10 | 0 | 20 |
| Miami C (DII) | West Virginia A (UG) | 10 | 10 | 0 | 20 |
| Michigan B (UG) | Ohio State C (DII) | 0 | 10 | 0 | 10 |
| Michigan A (UG) | Michigan D (UG) | 10 | 10 | 0 | 20 |
| Jefferson County Scholars (DII) | Michigan State A | 10 | 10 | 0 | 20 |
| Ohio State B (DII) | Michigan State B | 10 | 10 | 0 | 20 |
| Miami A (UG) | West Virginia B (UG) | 10 | 10 | 0 | 20 |
| Arizona State B | Alberta | 0 | 10 | 0 | 10 |
| UW Gluttony | Boise State | 10 | 10 | 0 | 20 |
| UW Greed | UW Lust | 10 | 10 | 0 | 20 |
| UW Pride | UBC B | 10 | 10 | 0 | 20 |
| UW Sloth | Arizona State A | 0 | 10 | 0 | 10 |
| UBC A | UW Wrath | 10 | 10 | 0 | 20 |
| Vanderbilt A | Alabama A | 0 | 10 | 0 | 10 |
| Georgia Tech B | Auburn C | 10 | 10 | 0 | 20 |
| Emory Oxford | Emory A | 10 | 10 | 0 | 20 |
| Georgia Tech A | Furman | 10 | 10 | 10 | 30 |
| Georgia Tech C | Belmont | 0 | 10 | 0 | 10 |
| Georgia Tech D | Tennessee A | 10 | 10 | 0 | 20 |
| Missisippi State | Georgia Tech B | 10 | 10 | 10 | 30 |
| Mississippi State A | Georgia Tech E | 0 | 10 | 0 | 10 |
| South Carolina B | Southern | 10 | 10 | 10 | 30 |
| Clemson B | Tennessee B | 0 | 10 | 10 | 20 |
| Vanderbilt B | Auburn B | 0 | 10 | 0 | 10 |
| VCU | Appalachian State B | 0 | 10 | 0 | 10 |
| UNC B | Duke A | 10 | 10 | 0 | 20 |
| UNC D | James Madison B | 0 | 10 | 0 | 10 |
| Liberty A | Virginia Tech A | 0 | 10 | 10 | 20 |
| Liberty C | Tusculum | 0 | 0 | 0 | 0 |
| Virginia Tech B | NC State | 10 | 10 | 0 | 20 |
| UNC A | Duke B | 10 | 10 | 0 | 20 |
| UNC C | Appalachian State A | 10 | 10 | 0 | 20 |
| William & Mary | Virginia | 0 | 10 | 10 | 20 |
| UCLA C | Claremont C | 10 | 10 | 10 | 30 |
| UCLA A | UCLA E | 10 | 10 | 10 | 30 |
| Claremont A | UCLA B | 10 | 10 | 0 | 20 |
| UCLA D | UCSD | 10 | 10 | 10 | 30 |
| USC | Claremont B | 10 | 10 | 0 | 20 |
| Columbia A (UG) | Bard A (UG) | 10 | 10 | 10 | 30 |
| Columbia B | Rutgers B | 0 | 10 | 0 | 10 |
| Columbia J (DII) | Lehigh B (DII) | 10 | 10 | 0 | 20 |
| Fordham A | Maryland B (DII) | 0 | 10 | 0 | 10 |
| Penn A (DII) | Lehigh A (UG) | 0 | 10 | 0 | 10 |
| Maryland A (DII) | NYU B | 10 | 10 | 10 | 30 |
| NYU A (UG) | Rowan A (DII) | 0 | 10 | 0 | 10 |
| Princeton A (UG) | Penn B (DII) | 10 | 10 | 0 | 20 |