Question

One of the many mysteries of the K-Pg extinction is the different fates of ammonites and nautiloids. These were mollusks with buoyant, chambered shells that lived in open water habitats. Ammonites went extinct during the K-Pg extinction but some nautiloids survived.

These two groups had different reproductive strategies; ammonites seem to have produced many free-swimming young each year that fed near the surface and grew rapidly. By contrast, a female nautilus produces just a few large eggs per year, each of which rests quietly in the depths for up to a year before hatching into a small slow-growing nautilus.

Based on these different reproductive strategies, hypothesize why the nautiloids but not the ammonites may have been able to survive an asteroid impact.

Answer 1

near the Juwer i Since ammonites are thought to have. produced young that swam freely and ted occan sustace, these young would have been greatly absented by the astoriad Impart. The impost likely would have product dust that lingered in the air, blocking sunlight from reaching the water. Due to the redured Sunlight, phytoplankton, would have been unable to undergo photoplankton and therefore these fast-growing young would not have any source of tood, This is a possible explanation the why ammonities did not survive the K-pg Extinction. In contrast, nautiloids produce that remain deep teu lorge Eggs 12 montes before Each year to in the ocean bol up hatching

The dust and resulting lack of of sunlight would not have attented the Eggs much, Simce they rusted deep are the ocean before hatching . Atter katching, the young may have been able to survive longer without a source of bood due to their slow growth This provides a possible explanation for why some nautitoids survived the K-Pg Extinction. my Answer please late