$15 Calendario de pared 2022 de Bright Day, de 30,5 x 30,5 c Oficina y papelería Calendarios, agendas y organizad Calendarios de pared Oficina y papelería , Calendarios, agendas y organizad , Calendarios de pared,de,2022,30,5,x,Bright,30,5,Calendario,/gusla925614.html,rojan.mx,pared,de,de,$15,c,Day, Oficina y papelería , Calendarios, agendas y organizad , Calendarios de pared,de,2022,30,5,x,Bright,30,5,Calendario,/gusla925614.html,rojan.mx,pared,de,de,$15,c,Day, Calendario de pared 2022 gift Bright 30 5 Day x c Calendario de pared 2022 gift Bright 30 5 Day x c $15 Calendario de pared 2022 de Bright Day, de 30,5 x 30,5 c Oficina y papelería Calendarios, agendas y organizad Calendarios de pared

Calendario de pared 2022 gift Bright 30 favorite 5 Day x c

Calendario de pared 2022 de Bright Day, de 30,5 x 30,5 c

$15

Calendario de pared 2022 de Bright Day, de 30,5 x 30,5 c

|||

Misterioso en la naturaleza, y una parte fascinante de los tiempos prehistóricos, los dinosaurios siempre inspirarán nuestra curiosidad, y nunca dejarán de sorprendernos. Pueden variar desde el tamaño de un pollo hasta el tamaño de un edificio de cuatro pisos. Aunque estas bestias tienen más de 200 millones de años, sus imágenes son atemporales. Este calendario de dinosaurios es perfecto para adultos y niños.

Calendario de pared 2022 de Bright Day, de 30,5 x 30,5 c

Become a taxon contributor Learn more

Diatoms of North America is a collaborative work in progress, growing and changing as science advances.

Taxa by Morphology

New to diatoms? Jump into diatom identification using the visual key.

Editorial Review Board

Using diatoms in assessment? Specify the use of Diatoms of North America in contracts and task agreements.

What are Diatoms?

Diatoms are single-celled algae that live nearly everywhere there is water - streams, ponds, lakes, oceans, and even soils.


For practitioners

Taxon
Identification Guide

Genera

Classification information, citations, links and species listings for 166 genera completed to date.

We encourage new contributors to submit taxon pages.

This project depends on many people to document the diverse diatom flora of streams, rivers, wetlands, lakes, springs, soils, estuaries and coastal zones.

Recent News & Projects

Diatom Web Academy 2022

The Diatom Web Academy continues... Sessions are recorded and can be accessed for later viewing. You are invited to join us, wherever you may be,...

Read More

Diatoms of North America has been developed in part with the generous funding and support of US EPA, USGS, the Institute of Arctic and Alpine Research at University of Colorado Boulder and other organizations.