Rhynchonellata - Spiriferida - Martiniidae

Synonym: Martinia shumardiana Girty 1908

Full reference: G. H. Girty. 1908. The Guadalupian fauna. United States Geological Survey Professional Paper 58:1-651

Belongs to Martinia according to G. A. Cooper and R. E. Grant 1976

Sister taxa: Martinia abrupta, Martinia acuminata, Martinia acutirostris, Martinia acutomarginalis, Martinia acutomarginiformis, Martinia adentata, Martinia affinis, Martinia angulata, Martinia anorbicularis, Martinia applanata, Martinia attenuatelloides, Martinia avicula, Martinia aviformis, Martinia baiyanhuaensis, Martinia bassa, Martinia berthiaumei, Martinia bisinuata, Martinia bittneri, Martinia buriensis, Martinia camengensis, Martinia carinthiaca, Martinia causaria, Martinia ceres, Martinia circularis, Martinia contracta, Martinia corculum, Martinia cornelia, Martinia cruenta, Martinia debosensis, Martinia decora, Martinia distefanoi, Martinia distorta, Martinia elegans, Martinia elongata, Martinia exigua, Martinia frechi, Martinia fucina, Martinia fulingensis, Martinia gemmellaroi, Martinia glabra, Martinia grandis, Martinia hengshanensis, Martinia hunanensis, Martinia incerta, Martinia karawanica, Martinia kraffti, Martinia lamellosa, Martinia lata, Martinia latisulcata, Martinia lengwuensis, Martinia manchuriensis, Martinia martinezi, Martinia miranda, Martinia mongolica, Martinia nealranchensis, Martinia nipponica, Martinia nucula, Martinia orbicularis, Martinia osborni, Martinia parvula, Martinia pentagonalis, Martinia periquadrata, Martinia polymorpha, Martinia pusilla, Martinia rectangularis, Martinia renfroae, Martinia rhomboidalis, Martinia rupicola, Martinia semiplana, Martinia semiramis, Martinia sinensis, Martinia sinuata, Martinia spissa, Martinia subapplanata, Martinia subrhomboidalis, Martinia subtriquetra, Martinia timanica, Martinia tongmuqiaoensis, Martinia triquetra, Martinia umbonata, Martinia undatifera, Martinia variabilis, Martinia velebitica, Martinia warthi, Martinia wolfcampensis, Martinia zhexiensis, Martinia ziyunensis, Spirifer (Martinia) macilentus

Type specimens:

• Martinia rhomboidalis: USNM 118593a
• Martinia shumardiana:

Ecology: stationary epifaunal suspension feeder

Average measurements (in mm): shell 14.0 x 12.8, valve 17.4 x 15.2