Fig. 3: Two types of amber from the Genoveva quarry.
From: Cretaceous amber of Ecuador unveils new insights into South America’s Gondwanan forests

a–c Large amber pieces (kidney-shaped), formed from resin exuded from roots in confined conditions, are the most common pieces in the outcrop, but they lack bioinclusions. d–h Small or medium-sized amber pieces (stalactite-shaped), formed from resin exuded from trunks or branches in aerial conditions, are scarce, but some of them contain bioinclusions. The pieces (d–h) will be housed at the Laboratory of Palaeontology, Escuela Politécnica Nacional, in Quito (Ecuador). Scale bars: 1 cm (d–f), 5 mm (g, h).