Barameda

{{Short description|Extinct genus of tetrapodomorphs}}

{{Automatic taxobox

| fossil_range = Tournasian
~{{Fossil range|355}}

| image = Barameda20DB.jpg

| image_caption = Life restoration

| taxon = Barameda

| authority = Long, 1989

| subdivision =

  • {{extinct}}B. decipiens
  • {{extinct}}B. mitchelli

}}

Barameda (Indigenous Australian language: "fish trap"{{Cite journal |last=Long |first=John A. |date=1989-03-30 |title=A new rhizodontiform fish from the Early Carboniferous of Victoria, Australia, with remarks on the phylogenetic position of the group |url=https://doi.org/10.1080/02724634.1989.10011735 |journal=Journal of Vertebrate Paleontology |volume=9 |issue=1 |pages=1–17 |doi=10.1080/02724634.1989.10011735 |bibcode=1989JVPal...9....1L |issn=0272-4634|url-access=subscription }}) is a genus of rhizodont lobe-finned fishes which lived during the Tournaisian stage near the start of the Carboniferous period in Australia; fossils of the genus have been reported from the Snowy Plains Formation.{{Cite journal |last1=Holland |first1=Timothy |last2=Warren |first2=Anne |last3=Johanson |first3=Zerina |last4=Long |first4=John |last5=Parker |first5=Katherine |last6=Garvey |first6=Jillian |date=2007-06-12 |title=A new species of Barameda (Rhizodontida) and heterochrony in the rhizodontid pectoral fin |url=https://doi.org/10.1671/0272-4634(2007)27[295:ANSOBR]2.0.CO;2 |journal=Journal of Vertebrate Paleontology |volume=27 |issue=2 |pages=295–315 |doi=10.1671/0272-4634(2007)27[295:ANSOBR]2.0.CO;2 |s2cid=86156691 |issn=0272-4634|url-access=subscription }} The largest member of this genus, Barameda decipiens, reached an estimated length of around {{convert|3-4|m|ft}},{{Cite journal |last=Holland |first=Timothy |date=2010-12-14 |title=Upper Devonian osteichthyan remains from the Genoa River, Victoria, Australia |url=https://museumsvictoria.com.au/collections-research/journals/memoirs-of-museum-victoria/volume-67-2010/pages-35-44/|journal=Memoirs of Museum Victoria |language=English |volume=67 |pages=35–44 |doi=10.24199/j.mmv.2010.67.04|doi-access=free }} while the smallest species, B. mitchelli is estimated to have had a length of about {{convert|35|cm|in}}.{{Cite journal |last=Jeffery |first=Jonathan E. |date=2012-09-01 |title=Cranial morphology of the Carboniferous rhizodontid Screbinodus ornatus (Osteichthyes: Sarcopterygii) |url=https://doi.org/10.1080/14772019.2011.595961 |journal=Journal of Systematic Palaeontology |volume=10 |issue=3 |pages=475–519 |doi=10.1080/14772019.2011.595961 |s2cid=84810001 |issn=1477-2019|url-access=subscription }}

Description

Species of the genus Barameda had an extremely elongated and thick body typical of Carboniferous rhizodonts. It was covered with moderately thin, cycloidal scales, with thick bony plates covering its head and operculum (gill flaps), a tightly fused Skull roof, and extremely prominent, sharp fangs, devoid of serrations or cutting edges. Its scales preserved a lateral line. Originally it was estimated to have a typical narrow pectoral fin, however a later study shows that it had a wider pectoral fin like other Carboniferous rhizodonts.

Paleoecology

Along with other rhizodonts, Barameda seems likely to have been a benthic ambush predator, and its pectoral fins support that interpretation.{{Cite journal|last1=Garvey|first1=Jillian M.|last2=Johanson|first2=Zerina|last3=Warren|first3=Anne|date=2005-03-11|title=Redescription of the pectoral fin and vertebral column of the rhizodontid fish Barameda decipiens from the lower carboniferous of Australia |url=https://doi.org/10.1671/0272-4634(2005)025[0008:ROTPFA]2.0.CO;2 |journal=Journal of Vertebrate Paleontology |volume=25 |issue=1 |pages=8–18 |doi=10.1671/0272-4634(2005)025[0008:ROTPFA]2.0.CO;2 |s2cid=85602761 |issn=0272-4634|url-access=subscription}}

References