1998年,密克尔·菲格斯(Miquel G. Fígols)在西班牙卡斯特利翁省莫雷利亚市附近梅斯拉特盆地(Maestrat Basin)的沉积物中发现了莫雷利亚黏土组(英语:Arcillas de Morella Formation)的圣安东尼德拉韦斯帕化石点(Sant Antoni de la Vespa fossil site)。随后于2005及2008年野外考察期间挖出加伦巴巨龙化石。已知材料属于多具体型不同的个体。构成最大个体遗骸的正模标本包含一系列关节连接的颈椎和背椎、部分背椎椎体、肋骨、尾椎、人字骨、一个锁间骨(英语:interclavicle)、两个股骨、胫骨及腓骨、右距骨、大部分右脚以及两个跖骨。其中包括颈椎-背椎系列、肋骨、尾椎、人字骨、一个不完整的髂骨以及左股骨、胫骨和腓骨在内的部分骨骼尚未清修完毕。属于一具较小个体的额外化石材料被发现与正模标本相关,包括肋骨、两个耻骨及两条接近完整、且存在与正模存在明显重叠材料的后肢。这些骨骼被指定为副模标本(英语:paratype)。三个左跖骨及两个左趾骨亦被归入该属。属于较小标本的额外材料显示这组遗骸代表至少四具个体。[1]
2023年,莫丘等人据此化石遗骸描述了多孔椎龙类蜥脚下目新属新种莫雷利亚加伦巴巨龙(Garumbatitan morellensis)。属名“Garumbatitan”组合当地最高峰加伦巴山(加泰罗尼亚语:Mola de la Garumba)及大型蜥脚类学名常见后缀“titan”,指希腊神话中的前奥林匹斯神祗。种名“morellensis”取自莫雷利亚黏土组及附近发现了首批西班牙恐龙遗骸(包括加伦巴巨龙)的莫雷利亚市。[1]
^ 1.01.11.21.31.41.5Mocho, Pedro; Escaso, Fernando; Gasulla, José M; Galobart, Àngel; Poza, Begoña; Santos-Cubedo, Andrés; Sanz, José L; Ortega, Francisco. New sauropod dinosaur from the Lower Cretaceous of Morella (Spain) provides new insights on the evolutionary history of Iberian somphospondylan titanosauriforms. Zoological Journal of the Linnean Society. 2023-09-28. ISSN 0024-4082. doi:10.1093/zoolinnean/zlad124(英语).
^ 3.03.1Mocho, P.; Pérez-García, A.; Gasulla, J. M.; Ortega, F. High sauropod diversity in the upper Barremian Arcillas de Morella Formation (Maestrat Basin, Spain) revealed by a systematic review of historical material. Journal of Iberian Geology. 2017-07-28, 43 (2): 111–128. ISSN 1698-6180. doi:10.1007/s41513-017-0012-8(英语).
^Royo-Torres, Rafael; Fuentes, Carolina; Meijide, Manuel; Meijide-Fuentes, Federico; Meijide-Fuentes, Manuel. A new Brachiosauridae Sauropod dinosaur from the lower Cretaceous of Europe (Soria Province, Spain). Cretaceous Research. 2017, 80: 38–55. doi:10.1016/j.cretres.2017.08.012(英语).
^Malafaia, E.; Miguel Gasulla, J.; Escaso, F.; Narváez, I.; Luis Sanz, J.; Ortega, F. A new spinosaurid theropod (Dinosauria: Megalosauroidea) from the late Barremian of Vallibona, Spain: Implications for spinosaurid diversity in the Early Cretaceous of the Iberian Peninsula. Cretaceous Research. 2019, 106: 104221. S2CID 202189246. doi:10.1016/j.cretres.2019.104221.
^Santos-Cubedo, A.; de Santisteban, C.; Poza, B.; Meseguer, S. A new spinosaurid dinosaur species from the Early Cretaceous of Cinctorres (Spain). Scientific Reports. 2023, 13 (1). 6471. doi:10.1038/s41598-023-33418-2.
^Pérez-García, A.; Gasulla, J. M.; Ortega, F. Eodortoka morellana gen. et sp. nov., the first pan-pleurodiran turtle (Dortokidae) defined in the Lower Cretaceous of Europe. Cretaceous Research. 2014-03-01, 48: 130–138. ISSN 0195-6671. doi:10.1016/j.cretres.2013.12.004.
^Quesada, Juan M.; Pérez-García, Adán; Gasulla, José Miguel; Ortega, Francisco. Plesiosauria remains from the Barremian of Morella (Castellón, Spain) and first identification of Leptocleididae in the Iberian record. Cretaceous Research. 2019-02-01, 94: 8–24. ISSN 0195-6671. S2CID 134139253. doi:10.1016/j.cretres.2018.10.010(英语).