Rhinconichthys

Rin-kon-ik-fiss.
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Claire Morris

Marine Paleontologist

Claire Morris has dedicated her career to exploring the depths of prehistoric oceans. Her fascination with ancient marine life has led her to discover significant fossils that illuminate the evolution of early sea creatures.

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Name

Rhinconichthys.

Phonetic

Rin-kon-ik-fiss.

Named By

Matt Friedman,‭ ‬Kenshu Shimada,‭ ‬Larry D.‭ ‬Martin,‭ ‬Michael J.‭ ‬Everhart,‭ ‬Jeff Liston,‭ ‬Anthony Maltese‭ & ‬Michael Triebold‭ ‬-‭ ‬2010.

Classification

Chordata,‭ ‬Actinopterygii,‭ ‬Pachycormiformes,‭ ‬Pachycormidae.

Diet

Filter feeder.

Species

R.‭ ‬taylori‭ ‬,‭ ‬R.‭ ‬purgatoirensis,‭ ‬R.‭ ‬uyenoi

Size

R.‭ ‬purgatoirensis about‭ ‬2‭ ‬-‭ ‬2.7‭ ‬meters long.‭ ‬R.‭ ‬uyenoi.‭ ‬about‭ ‬3.4-4.5‭ ‬meters long.

Known locations

England.‭ ‬Japan‭ ‬-‭ ‬Mikasa Formation.‭ ‬USA,‭ ‬Colorado‭ ‬-‭ ‬Carlile Shale.

Time Period

Turonian of the Cretaceous.

Fossil representation

Partial remains of several individuals.

In Depth

       Rhinconichthys was first named in‭ ‬2010,‭ ‬from fossils that had been discovered in England.‭ ‬Then in‭ ‬2016‭ ‬a description of two new species,‭ ‬R.‭ ‬uyenoi from Japan and R.‭ ‬purgatoirensis from the USA were described,‭ ‬revealing to us that this fish genus potentially had a global distribution.‭ ‬Rhinconichthys is noted for the large hyomandibulae bones which would have allowed this to have had an incredibly wide gape,‭ ‬in turn allowing Rhinconichthys to filter‭ ‬large amounts of plankton from the sea water.

       Rhinconichthys is related to the genera Bonnerichthys and Leedsichthys.

Further Reading

– 100-million-year dynasty of giant planktivorous bony fishes in the Mesozoic seas.‭ ‬-‭ ‬Science‭ ‬327‭ (‬5968‭)‬:‭ ‬990‭–‬993.‭ ‬-‭ ‬Matt Friedman,‭ ‬Kenshu Shimada,‭ ‬Larry D.‭ ‬Martin,‭ ‬Michael J.‭ ‬Everhart,‭ ‬Jeff Liston,‭ ‬Anthony Maltese‭ & ‬Michael Triebold‭ ‬-‭ ‬2010. -‭ ‬Highly specialized suspension-feeding bony fish Rhinconichthys‭ (‬Actinopterygii:‭ ‬Pachycormiformes‭) ‬from the mid-Cretaceous of the United States,‭ ‬England,‭ ‬and Japan.‭ ‬-‭ ‬Cretaceous Research‭ ‬61:‭ ‬71‭–‬85.‭ ‬-‭ ‬Bruce Schumacher,‭ ‬Kenshu Shimada,‭ ‬Jeff Liston,‭ ‬Anthony Maltese‭ ‬-‭ ‬2016.

SPECIES SPOTLIGHT