WhenWe Crossword Puzzles

Invertebrates Crossword Puzzle

 Make a Crossword Puzzle   Make a Word Search from a Reading Assignment   Make a Word Search from a List of Words 
 All Crossword Puzzles
 Earth Sciences Crossword Puzzles
 Earth Sciences Word Search Puzzles
 Young Kids Crossword Puzzles
 Older Children Crossword Puzzles
 Teenage Crossword Puzzles
 Adult Crossword Puzzles
 Simple Crossword Puzzles
 Easy Crossword Puzzles
 Moderately Challenging Crossword Puzzles
 Hard Crossword Puzzles
 Very Difficult Crossword Puzzles
 Big Crossword Puzzles
send to a friend


          3                 4                    
6                 7                              
Across Down
5 moss animals, single-cell animals & calcium carbonate shell, more advanced than corals
8 extinct cnidarian, made reefs during paleozoic, called 'horn corals'
9 sea scorpions, extinct marine predators, can climb out of water to find food, up to 6 ft big
10 shells on upper & lower body, symmetrical at midline, articulated or inarticulated types
11 easily identified fossil with wide geographic distribution and short range, guide fossils
12 have 5-fold symmetry, include crinoids, starfish, sea lilies, can grow back missing parts
13 'arms on head' include ammonites & nautiloids, today include octopus/squid
1 bivalves, symmetry between 2 shells, clams, oysters, scallops, mollusks
2 snails/slugs, confused with ammonites but - occupy different part of shell
3 natural sea sponges, colonial, primitive single cell organism, soft body & exoskeleton
4 extinct index fossil, spiral shaped shell that extends as they grow, old house buoyancy
6 extinct marine arthropods, famous fossil group, 17,000 species, 3 body segments
7 single cell polyps that built large reef structures with horizontal floor levels
13 look like plants, stem attaches to sea floor, lots of little feeding arms
send to a friend
Make Your Own Crossword Free
Make Your Own Word Search Free