Developmental anomalies in 'reptiles': a scoping review

Developmental anomalies affect all species. However, the amount of data varies greatly among taxa and focuses mainly on domestic or model species, leaving some groups, like "reptiles", lacking information. To access the accumulated data regarding developmental anomalies in non-avian reptiles, we conducted a systematic bibliographic review of the available data for the past 60 years (from 1960 to 2019) and classified them accordingly to their research type (Systematic Bibliographic Review, Case Study, Environmental Study, Staging Table/Ontogenetic Study, Molecular Study, Evolutionary Study, Experimental Study), and listed the anomalies there described. We obtained 90 hits, over 50% published in the last decade. The most common study type found was "Case Studies", followed by "Environmental Studies" and "Systematic Bibliographic Reviews", and in smaller numbers, "Staging Tables and Ontogenetic Studies", "Molecular Studies", "Experimental Studies" and "Evolutionary Studies". As a result, we found 289 individual records of anomalies across all non-avian reptile groups. From this total, we registered 121 different appropriately named documented anomalies and provided names for 21 anomalies based on their description, thus naming and describing a total of 134 different unique anomalies for reptiles.