Foraminifera taxon details
Halkyardia Heron-Allen & Earland, 1918 †
520886 (urn:lsid:marinespecies.org:taxname:520886)
accepted
Genus
Cymbalopora radiata var. minima Liebus, 1911 † accepted as Halkyardia minima (Liebus, 1911) † (type by subsequent designation)
- Species Halkyardia bartrumi Parr, 1934 †
- Species Halkyardia bikiniensis Cole, 1954 †
- Species Halkyardia maxima Cimerman, 1969 †
- Species Halkyardia minima (Liebus, 1911) †
- Species Halkyardia ovata (Halkyard, 1918) † accepted as Droogerinella ovata (Halkyard, 1918) † (unaccepted > superseded combination)
marine, brackish, fresh, terrestrial
fossil only
feminine
Halkyard, E. (1918). The fossil foraminifera of the Blue Marl of the Côte des Basques, Biarritz. <em>Memoirs and proceedings of the Manchester Literary and Philosophical Society.</em> 62 (6): 1-145., available online at https://www.biodiversitylibrary.org/page/39515003
page(s): p. 107 [details]
page(s): p. 107 [details]
Diagnosis Test commonly small, up to about 1.3 mm in diameter, biconvex, spiral side more convex, megalospheric test with large...
Diagnosis Test commonly small, up to about 1.3 mm in diameter, biconvex, spiral side more convex, megalospheric test with large hemispherical protoconch, large deuteroconch, and two primary auxiliary chambers, later chambers in numerous cycles, small as seen from the spiral side, arched toward the periphery and alternating in position with those of the preceding cycle, only those of the final whorl visible on the opposite side, where the chambers appear elongate, inflated, and tubular, umbilical region beneath the embryonic chambers filled with a wide perforate plug formed by horizontal lamellae and connecting pillars, periphery subangular, peripheral outline lobulate; wall calcareous, optically radial, thickened by addition of lamellae on the distinctly perforate spiral side; no aperture other than the surface pores. M. Eocene (Lutetian) to M. Oligocene (Rupelian); Yugoslavia; France; Germany; USSR: Azerbaydzhan; India; Pacific: Bikini Atoll, Marshall Islands. (Loeblich & Tappan, 1987, Foraminiferal Genera and Their Classification) [details]
Hayward, B.W.; Le Coze, F.; Vachard, D.; Gross, O. (2021). World Foraminifera Database. Halkyardia Heron-Allen & Earland, 1918 †. Accessed at: https://www.marinespecies.org/foraminifera/aphia.php?p=taxdetails&id=520886 on 2025-05-13
Date
action
by
original description
Halkyard, E. (1918). The fossil foraminifera of the Blue Marl of the Côte des Basques, Biarritz. <em>Memoirs and proceedings of the Manchester Literary and Philosophical Society.</em> 62 (6): 1-145., available online at https://www.biodiversitylibrary.org/page/39515003
page(s): p. 107 [details]
additional source Loeblich, A. R.; Tappan, H. (1987). Foraminiferal Genera and their Classification. Van Nostrand Reinhold Company, New York. 970pp., available online at https://books.google.pt/books?id=n_BqCQAAQBAJ [details] Available for editors
[request]
page(s): p. 107 [details]
additional source Loeblich, A. R.; Tappan, H. (1987). Foraminiferal Genera and their Classification. Van Nostrand Reinhold Company, New York. 970pp., available online at https://books.google.pt/books?id=n_BqCQAAQBAJ [details] Available for editors
[request]From editor or global species database
Diagnosis Test commonly small, up to about 1.3 mm in diameter, biconvex, spiral side more convex, megalospheric test with large hemispherical protoconch, large deuteroconch, and two primary auxiliary chambers, later chambers in numerous cycles, small as seen from the spiral side, arched toward the periphery and alternating in position with those of the preceding cycle, only those of the final whorl visible on the opposite side, where the chambers appear elongate, inflated, and tubular, umbilical region beneath the embryonic chambers filled with a wide perforate plug formed by horizontal lamellae and connecting pillars, periphery subangular, peripheral outline lobulate; wall calcareous, optically radial, thickened by addition of lamellae on the distinctly perforate spiral side; no aperture other than the surface pores. M. Eocene (Lutetian) to M. Oligocene (Rupelian); Yugoslavia; France; Germany; USSR: Azerbaydzhan; India; Pacific: Bikini Atoll, Marshall Islands. (Loeblich & Tappan, 1987, Foraminiferal Genera and Their Classification) [details]
