Yes because you have a smaller population
Plants absorb me from the soil through assimilation, I am eaten by animals the animals and plants die and decompose where I am released back into the soil, weathering and erosion cause me to release out of rocks, I then find my way into the ocean being carried by water, I then return to the soil through the water.
The alula is a small structure that is found on birds. It is located at the joint between the hand wing and the arm wings of birds and it is the freely moving, first digit of a bird's wing. It is normally used by birds in slow flight. In humans, the structure that is comparable to the alula is the thumb.
Your question: Which organism was most likely to live at the same time as brachiopods..?
Your answer: The organism that is most likely to live at the same time as brachiopods is Trilobites.
Hope this helps! :)