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Refer to the Scenario Below, and Then Answer the Following

question 21

Multiple Choice

Refer to the scenario below, and then answer the following question(s) .
You are the managing naturalist for a natural history museum that has just received a batch of fossils from one of the field paleontologists sponsored by the museum. The note in the box states the fossils all came from the same rock layer. The museum is organized according to geologic timescale, and its management needs you to tell them to which department (based on era) and period specialist (an individual with experience with life-forms of a particular geologic-timescale period) the fossils should go. You find fossils of fish and seed-bearing plants but no reptiles or higher animals and no flowering plants.
-To which era do these fossils belong?

Definitions:

Distinct Quartets

In NMR spectroscopy, a pattern indicating a group of hydrogen atoms coupled to three other hydrogens, resulting in four equally spaced peaks.

Off-Resonance Decoupled

In NMR spectroscopy, a technique used to simplify complex spectra by decoupling specific nuclei from the observed spin-spin interactions.

Proton Spin Decoupled

A technique in nuclear magnetic resonance (NMR) spectroscopy that removes the interaction between proton spins to simplify the spectrum and aid in structural analysis.

Proton Spin Decoupled

A method used in nuclear magnetic resonance (NMR) spectroscopy where the interactions between proton spins are removed to simplify the spectrum.