ammonites
Lingula ovata Dana 1847 (lamp shell)

Lingulata - Lingulida - Lingulidae

Full reference: J. D. Dana. 1847. Descriptions of fossil shells of the collections of the exploring expedition under the command of Charles Wilkes, USN, obtained in Australia, from the lower layers of the coal formation in Illawarra, and from a deposit probably of nearly the same age at Harper's Hill, Valley of the Hunter. American Journal of Science and Arts, Second Series 4:151-160

Belongs to Lingula according to J. D. Dana 1849

Sister taxa: Lingula (Glossina), Lingula acutangula, Lingula adamsi, Lingula allingi, Lingula anatina, Lingula arctica, Lingula beanii, Lingula borealica, Lingula borealis, Lingula bravardi, Lingula briseis, Lingula carbonaria, Lingula clintoni, Lingula cobourgensis, Lingula complanata, Lingula credneri, Lingula cuneata, Lingula curta, Lingula deitersensis, Lingula desiderata, Lingula dregeri, Lingula elegantula, Lingula elongata, Lingula eva, Lingula freboldi, Lingula fuyuanensis, Lingula huronensis, Lingula hyperborea, Lingula ingens, Lingula kedonensis, Lingula kolymaensis, Lingula lamellata, Lingula liurjakhensis, Lingula marginata, Lingula marginia, Lingula meeki, Lingula metensis, Lingula minima, Lingula morsei, Lingula nanimensis, Lingula nitida, Lingula nympha, Lingula oblata, Lingula obtusa, Lingula olenekensis, Lingula percorrugata, Lingula philomela, Lingula polaris, Lingula progne, Lingula reevii, Lingula riciniformis, Lingula spatulata, Lingula squamiformis, Lingula sturti, Lingula subcircularis, Lingula subelliptica, Lingula subovalis, Lingula subspatulata, Lingula subtenuissima, Lingula truncata, Lingula tumida, Lingula tumidula, Lingula whitfieldi, Lingula xinlinensis

Type specimen: Its type locality is Black Head, Gerringong (USNM coll), which is in a Wordian marine sandstone in the Gerringong Formation of Australia

Ecology: facultatively mobile infaunal suspension feeder

Average measurements (in mm): valve 8.50 x 6.30