Hibolithes is a genus of belemnites that lived from the Middle Jurassic to the Early Cretaceous, and has been found in Antarctica,M. R. A. Thomson. 1982. Late Jurassic fossils from Low Island, south Shetland Islands. Br. Antarct. Surv. Bull. (56)25-35J. Mutterlose. 1986. Upper Jurassic belemnites from the Orville Coast, Western Antarctica, and their palaeobiogeographical significance. Br. Antarct. Surv. Bull. (70)1-22 Greenland,P. Alsen and J. Mutterlose. 2009. The Early Cretaceous of north-east Greenland: a crossroads of belemnite migration. Palaeogeography, Palaeoclimatology, Palaeoecology 280:168-182 Iran,N. Mariotti, R. Weis, M. Falahatgar, H. Parent, and M. Javidan. 2013. Oxfordian belemnites and ammonites from Rostam Kola, Northern East Alborz, North Iran. Boletín del Instituto de Fisiografía y Geología 83 Europe, South America, and New Zealand. In 2020, this genus was found in the Pedawan Formation (Tithonian – Hauterivian) in Sarawak, on the island of Borneo (Malaysia).
Species and sexual dimorphism At least two Hibolithes species, H. conradi and H. semisulcatus, represented in Jurassic (Oxfordian and Tithonian) and possibly Early Cretaceous (Late Berriasian) zones of Hungary.
Hibolithes shimanskyi, H. orlovi and H. ivanovi from Upper Callovian-Lower Oxfordian of Bryansk Oblast and Saratov Oblast of European Russia, were described in 1976 by Gustomesov. In 2006, Ippolitov assigned H. shimanskyi as a synonym to H. girardoti due to sexual dimorphism within this species. Ippolitov also assigned H. orlovi and H. ivanovi as synonyms to H. sangensis for the same reason.
References
Further reading Fossils (Smithsonian Handbooks) by David Ward (Page 161) Combémorel R. & Mariotti M. 1986: Les bélemnites de la carrierede Serra San Quirico (Province d’Ancona, Apennin central, Italie)et la paléobiogéographie des bélemnites de la Téthys méditer-ranéenne au Tithonique inférieur. Géobios 19, 3, 299—321
External links Hibolithes in the Paleobiology Database