Create node display from your module, #drupal

gistfile1.php

<?php 

/**
 * Implements hook_entity_info_alter().
 */
function MYMODULE_entity_info_alter(&$entity_info) {
  $another_teaser = array(
    'label' => t('Another teaser'),
    'custom settings' => TRUE,
  );
  $entity_info['node']['view modes']['another_teaser'] = $another_teaser;
  $entity_info['taxonomy_term']['view modes']['another_teaser'] = $another_teaser;
}