Observatoryfor Human Rights.
The Observatory said the dead included women and children and the death toll from the air strikes was likely to rise. Al Jazeera's Zeina Khodr, reporting from the Turkish city of Gaziantep, said activists were split on whether Russian or Syrian planes were behind the attack.
"Many in the opposition believe that with strikes like this there's proof the government is not serious about the cessation of hostilities,"Khodr said.
In the night of Thursday to Friday rebels meanwhile seized a village from government forces near Aleppo overnight.
The rebels won ground in this way, near this Syrian city where the United States and Russia are trying to de-escalate the war.The Syrian Observatory for Human Rights said 73 people had been killed in the battle for Khan Touman, some 15 km (9 miles) southwest of Aleppo in a location near the Damascus-Aleppo highway. Some 30 government forces and 43 rebel forces were killed.
The attack was launched by an alliance of Islamist insurgents known as Jaish al-Fatah, including the al Qaeda-linked Nusra Front, which has rejected diplomatic efforts to halt the war and promote peace talks.
The attack is the latest in Syria, with much of the recent focus on the divided city of Aleppo where nearly 300
people were killed in nearly two weeks of air strikes and shelling. An estimated 400,000 people have so far been killed in the five year old Syrian conflict, according to the UN, with millions more displaced internally and in