Orthaulax

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| taxon = Orthaulax

| authority = Gabb, 1872

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Orthaulax is an extinct genus of sea snails in the family Strombidae.

Description

Orthaulax have spires and spiral lines, which vary based on species and age of the specimen. Initially, Orthaulax was thought to not show signs of variation in color, but it has later been discovered that colored patterns can be seen on non-eroded specimens of Orthaulax when they are shined with an ultraviolet light.{{cite journal |last1=Vokes |first1=Harold E |last2=Vokes |first2=Emily H |title=Variation in the Genus Orthaulax (Mollusca: Gastropoda) |journal=Tulane Studies in Geology and Paleontology |date=1968 |volume=6 |issue=2 |url=https://journals.tulane.edu/tsgp/article/view/477 |access-date=21 June 2025}}

Geology

Its fossils are most often found in areas with high lime content.{{cite journal |last1=Vokes |first1=Harold E |last2=Vokes |first2=Emily H |title=Variation in the Genus Orthaulax (Mollusca: Gastropoda) |journal=Tulane Studies in Geology and Paleontology |date=1968 |volume=6 |issue=2 |url=https://journals.tulane.edu/tsgp/article/view/477 |access-date=21 June 2025}} Examples of Orthaulax have been dated to the Oligocene and Miocene.{{cite journal |last1=Wythe Cooke |first1=C |title=Stratigraphic Significance of Orthaulax |journal=Bulletin of the Geological Society of America |date=1920 |volume=31 }}

Species

O. aguadillensis (Maury, 1920){{cite web |title=†Orthaulax aguadillensis Maury 1920 (snail) |url=https://paleobiodb.org/classic/checkTaxonInfo?taxon_no=157471 |website=Fossilworks |access-date=17 December 2021}}
O. altilis (Pilsbry, 1922){{cite web |title=†Orthaulax altilis Pilsbry 1922 (snail) |url=https://paleobiodb.org/classic/checkTaxonInfo?taxon_no=157475 |website=Fossilworks |access-date=17 December 2021}}
O. bermudezi (Clench and Aguayo, 1939){{cite web |title=†Orthaulax bermudezi Clench and Aguayo 1939 (snail) |url=https://paleobiodb.org/classic/checkTaxonInfo?taxon_no=157480 |website=Fossilworks |access-date=17 December 2021}}
O. brasiliensis (Maury, 1925){{cite web |title=†Orthaulax brasiliensis Maury 1925 (snail) |url=https://paleobiodb.org/classic/checkTaxonInfo?taxon_no=157477 |website=Fossilworks |access-date=17 December 2021}}{{cite web |title=Orthaulax brasiliensis ✝ |url=https://www.mindat.org/taxon-8560284.html |website=Mindat.org |access-date=31 March 2020}}
O. caepa (Cooke, 1921){{cite web |title=†Orthaulax caepa Cooke 1921 (snail) |url=https://paleobiodb.org/classic/checkTaxonInfo?taxon_no=157473 |website=Fossilworks |access-date=17 December 2021}}
O. conoides (Woodring, 1923){{cite web |title=†Orthaulax conoides Woodring 1923 (snail) |url=https://paleobiodb.org/classic/checkTaxonInfo?taxon_no=157476 |website=Fossilworks |access-date=17 December 2021}}{{cite book |title=Monthly Catalogue, United States Public Documents |date=January 1924 |publisher=U.S. Government Printing Office |page=402 |url=https://books.google.com/books?id=IzCpSHx_t3sC&q=Woodring%2C+1923&pg=PA402 |access-date=31 March 2020}}
O. dainellii (Savazzi, 1989){{cite web |title=Orthaulax dainellii Savazzi, 1989 |url=http://www.stromboidea.de/?n=Species.OrthaulaxDainellii |website=Gastropoda Stromboidea |access-date=31 March 2020}}
O. gabbi (Dall, 1890){{cite web |title=†Orthaulax gabbi Dall 1890 (snail) |url=https://paleobiodb.org/classic/checkTaxonInfo?taxon_no=94697 |website=Fossilworks |access-date=17 December 2021}}
O. hernandoensis (Mansfield, 1937){{cite web |title=†Orthaulax hernandoensis Mansfield 1937 (snail) |url=https://paleobiodb.org/classic/checkTaxonInfo?taxon_no=157479 |website=Fossilworks |access-date=17 December 2021}}
O. inornatus (Gabb, 1872){{cite web |title=†Orthaulax inornatus Gabb 1872 (snail) |url=https://paleobiodb.org/classic/checkTaxonInfo?taxon_no=109049 |website=Fossilworks |access-date=17 December 2021}}
O. japonicus (Nagao, 1924){{cite web |title=†Orthaulax japonicus Nagao 1924 |url=https://paleobiodb.org/classic/checkTaxonInfo?taxon_no=390903 |website=Fossilworks |access-date=17 December 2021}}
O. portoricoensis (Hubbard, 1921){{cite web |title=†Orthaulax portoricoensis Hubbard 1921 (snail) |url=https://paleobiodb.org/classic/checkTaxonInfo?taxon_no=157472 |website=Fossilworks |access-date=17 December 2021}}
O. pugnax (Heilprin, 1887){{cite web |title=†Orthaulax pugnax Heilprin 1887 (snail) |url=https://paleobiodb.org/classic/checkTaxonInfo?taxon_no=109243 |website=Fossilworks |access-date=17 December 2021}}
O. seaforthensis (Trechmann, 1941){{cite web |title=Orthaulax seaforthensis Trechmann, 1941 |url=http://www.stromboidea.de/?n=Species.OrthaulaxSeaforthensis |website=Gastropoda Stromboidea |access-date=31 March 2020}}

References

Category:Strombidae