Amphibian Egg String

Pliocene

Rita Blanca Formation

Oldham County, TX USA.

Extremely rare Pliocene egg string.  22mm x 10mm on 62mm slab.

Amphibian.

Amphibian eggs are extremely rare in the fossil record.  Their eggs are soft-bodied and typically laid in water connected together in strings or as a mass.  Such a delicate natural product would seem an unlikely candidate for fossilization, but in the right environment and under the right circumstances, it has happened for other animals just as fragile.