Maip
extinct genus of theropod dinosaurs
Maip is a genus of large megaraptorid theropod dinosaur from the Late Cretaceous (Maastrichtian) Chorrillo Formation of Santa Cruz, Argentina. The genus contains a single species, M. macrothorax, known from an incomplete, disarticulated skeleton. Maip may represent the largest megaraptorid known from South America, and possibly the world.
Discovery and naming
The Maip holotype specimen, MPM 21545, was discovered by Alexis Rolando on the La Anita Farm, 30 kilometres (19 mi) west of El Calafate, Santa Cruz province, Argentina, in 2019. The specimen was found disarticulated but in association over an area of 5 by 3 square metres (54 ft2 × 32 ft2). The known fossil material consists of the axis, several dorsal and caudal vertebrae, cervical and dorsal ribs, gastralia, a left coracoid, fragmentary scapula, partial right pubis, and partial metatarsal. Some of these bones were described in 2019 by Novas et al. The holotype specimen includes some bones previously unknown in other megaraptorids. Although fragmentary, it represents one of the most complete megaraptorid skeletons known.
Maip was first announced in a Research Square preprint in 2021.
The public source identifies “Maip” as extinct genus of theropod dinosaurs. This brief keeps that definition visible, then builds a research path around Maip, extinct and genus.
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Datasets, specimens, observations and peer-reviewed methods provide the appropriate test for the technical claims summarized here. The source revision retrieved here is dated Sep 1, 2026. The linked authority identifier is Q111731074. None of the 0 selected statements returned an explicit reference. The first chronological checks are 2019 and 2021.
A general summary may omit uncertainty, sample limits or methodological disagreement that is explicit in the technical record. The source lead contains qualifying language; that uncertainty should survive quotation, summary and reuse. Authority statements aid reconciliation but still require their own references, qualifiers and ranks to be checked.
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This entry incorporates text from “Maip” on English Wikipedia. Contributors are listed in the page history. Text is available under the Creative Commons Attribution-ShareAlike 4.0 License. Selected authority identifiers and statements are retrieved from Wikidata under CC0; their references and qualifiers remain part of the verification path.