Fossils of Thrinaxodon, a Species That Lived During the Triassic

question 30

Multiple Choice

Fossils of Thrinaxodon, a species that lived during the Triassic period, have been found in both South Africa and Antarctica. Thrinaxodon had a reptile-like skeleton and laid eggs, but small depressions on the front of its skull suggest it had whiskers and, therefore, fur. Thrinaxodon may have been warm-blooded. The fossils of Thrinaxodon are consistent with the hypothesis that ________.

• A) fossils found in a given area look like the modern species in that same area
• B) the environment where it lived was very warm
• C) mammals evolved from a reptilian ancestor
• D) Antarctica and South Africa separated after Thrinaxodon went extinct

---

Definitions:

Actual Costs

The genuine expenses incurred in the production of goods or delivery of services, measured after they occur.

Cost Formulas

Mathematical equations used to calculate the costs associated with different accounting and financial practices.

Flexible Budgets

Budgets that are designed to vary in accordance with changes in the level of activity or output, to provide more accurate costing and planning.

Spending Variance

The difference between the actual amount of the cost and how much the cost should have been, given the actual level of activity. A favorable (unfavorable) spending variance occurs because the cost is lower (higher) than expected, given the actual level of activity for the period.