Coat of arms of Senior

The blazon

per fesse, gu. and sa. a fesse erm. in chief two lions heads, erased, or, in base a dolphin, embowed, ar. — Crest, on a wreath, on a mount vert, a leopard, couchant, guardant, ppr. crowned with a Saxon coronet or.

A blazon is the description of a coat of arms in the technical language of heraldry. The drawing comes from that text, and from nothing else.