The first evidence of parental care in Tanaidaceans has been found by scientists, dating back to more than 105 million years, according to a new study. These new findings are based on the study of three small crustaceans from different species of the Cretaceous — Alavatanais carabe, Alavatanais margulisae and Daenerytanais maieuticus — preserved in amber pieces from the sites in Peñacerrada (Álava, Spain) and La Buzinie (Charente, France), reference models in the study of fossil records in amber with bioinclusions of the Mesozoic in Europe.