Thirteen to fifteen cervical vertebrae.
Ardeae.-Piscivorous, nidicolous, waders; with complicated hypotarsus and with long cervical apteria.
It may be added that in the Oreodontidae the vertebral artery pierces the transverse processes of the cervical vertebrae in the normal manner.
The cervical and thoracic vertebrae seem to be biconcave; the cervical ribs are much reduced and were apparently still movable; the thoracic ribs are devoid of uncinate processes.
The commonest seat is the groin, and next to that the axilla; the cervical, submaxillary and femoral glands are less frequently affected.