content-archive.php

<?php
/* prepare content */

//$post = get_post( get_the_ID() );


/* use featured image (thumbnail) if possible
 * or placeholder instead
 */

?>

<article id="post-<?php echo $post->ID; ?>" <?php post_class(); ?>>
	<?php if ( has_post_thumbnail( $post->ID ) ) : ?>
	<a href='<?php echo post_permalink($post->ID); ?>'>
		<?php echo get_the_post_thumbnail( $post->ID, 'thumbnail', array( 'class' => 'illustration' ) ); ?>
	</a>
	<?php endif; ?>
	<!-- / article title -->
	<header>
	<h2 class='title'>
		<a href="<?php echo post_permalink( $post->ID ); ?>"><?php the_title(); ?></a>
	</h2>
	 <span class='category'><?php the_category(', ','single'); ?></span>
	 <span class='creation-date'><?php echo get_the_date(); ?></span>
	 <span class='author'><?php the_author_posts_link(); ?></span>
	</header>
	<section class='excerpt'>
		<a href='<?php echo post_permalink($post->ID); ?>'>
		<?php the_excerpt(); ?>
		</a>
	</section>
</article><!-- #post-<?php the_ID(); ?> -->