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Crossword Puzzle
Crossword Puzzle

Paleozoico: Primeros ecosistemas

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Paleozoico: Primeros ecosistemas
 

Crossword Puzzle

Paleozoico: Primeros ecosistemasOnline version

Conceptos clave de la era Paleozoica

by Francisco Fuentes
1

Invertebrados marinos con exoesqueleto segmentado y numerosos fósiles.

2

Animales invertebrados con cuerpo blando y, a menudo, con una concha.

3

Invertebrados marinos con dos valvas dorsoventrales que protegen su cuerpo.

4

Organismos marinos sésiles que forman estructuras calcáreas en arrecifes.

5

Animales marinos de simetría radial y caparazones calcáreos.

6

Primeros vertebrados acuáticos con aletas para nadar.

7

Vertebrados que pueden vivir en agua y tierra tras su evolución.

8

Vertebrados terrestres con piel resistente y huevos con cáscara.

3
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2
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4
1
 
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