Good evidence exists for the appearance of gastropods (e.g., Aldanella), cephalopods (e.g., Plectronoceras, Nectocaris) and bivalves (Pojetaia, Fordilla) towards the middle of the Cambrian period, c. 500 million years ago, though arguably each of these may belong only to the stem lineage of their respective classes. However, the evolutionary history both of the emergence of molluscs … Web27. some animals found in blank are starfish mollusk shrimp hermit crabs and prawns 28. Hermit crabs (has, have) five pairs of jointed legs. 29. some animals found in _____are stasfish,mollusks,shrimp,hermit crabs, and prawns; 30. This is an area where solid rocks are found where animals like starfish hermit crab bernacel and .

Phylum Mollusca: Characters and Classification (With …

WebMolluscs: Type # 1. Chiton: Chiton (Fig. 62.1) is a sluggish, marine animal found attached to the rocks, empty shells and corals between tide marks. Body is elongated, bilaterally … The evolution of the molluscs is the way in which the Mollusca, one of the largest groups of invertebrate animals, evolved. This phylum includes gastropods, bivalves, scaphopods, cephalopods, and several other groups. The fossil record of mollusks is relatively complete, and they are well represented in most fossil-bearing marine strata. Very early organisms which have dubiously been comp… graduation poem to daughter

Freshwater Mussels Virginia DWR

WebThe diagram shows data on the evolution of horses. The data in the diagram is evidence that - answer choices a new species of horse suddenly appeared horses slowly developed over time horses have similar stages of rapid embryological development horses have a common ancestry with other hooved animals Report an issue Quizzes you may like 13 Qs Webthe shell of a mollusk visceral mass area beneath the mantle of a mollusk that contains the internal organs head-foot The part of the body of mollusks that contains both sensory and motor organs bilateral symmetry Body plan in which only a single, imaginary line can divide the body into two equal halves. type of reproduction in molluscs sexual Webthe ______ is a tonguelike strap with teeth made of chitin found in the mouth cavity of many mollusk species. 1. cells in the body wall produce sperm and eggs. 2. sperm are released into the water, but the sponge individual retains its eggs. chimney style table lamps