Gallus (the cockerel) was a constellation introduced in 1612 (or 1613) by Petrus Plancius. It was in the northern part of what is now Puppis. It was not adopted in the atlases of Johannes Hevelius, John Flamsteed and Johann Bode and fell into disuse. See also Obsolete constellations External links http://www.ianridpath.com/startales/gallus.htm Former constellations Constellations listed by Petrus Plancius Dutch celestial cartography in the Age of Discovery Astronomy in the Dutch Republic 1610s in the Dutch Republic