| Fig. 59 shows the stomach in Phoca vitulina, the harbor seal. |
| Thyroid hormone dynamics during the nursing period in harbour seals, Phoca vitulina. |
| Female distribution, genetic relatedness, and fostering behaviour in harbour seals, Phoca vitulina. |
| Originally in the genus Phoca with a number of other species, it has since been reclassified into its own genus Pagophilus. |
| The genera Phoca and Pusa could have arisen when a phocine lineage traveled from the Paratethys Sea to the Arctic Basin and subsequently went eastward. |
| In Phoca the dental formula is as in the last, but the teeth are smaller and more pointed. |
