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Conjoined Fetal Twins in a Harbor Seal (Phoca vitulina)
- Olson Jennifer K., Gaydos Joseph K., McKlveen Tori, Poppenga Robert, Wicinas Kay, Anderson Elizabeth, Raverty Stephen
- Journal of wildlife diseases 2016 v.52 no.1 pp. 173-176
- Phoca vitulina, abdomen, fetus, twins
- In July 2013, a stranded harbor seal (Phoca vitulina) died giving birth to conjoined fetuses. The twins were joined at the abdomen and thoracolumbar spine with the vertebral axis at 180°. The cause of this unique anomaly—a first for this species—was not identified.