The exact evolutionary relationships of Echinoconchinae relative to other groups of the suborderProductidina have been a matter of extensive debate throughout much of the 20th Century, primarily due to the three genera Buxtonia, Pustula and Juresania (with the debate later expanded to their families and subfamilies) shifting in position repeatedly between phylogenies and classifications. The emphasis on internal versus external characters to determine the systematics of these groups has largely been responsible for this: the original Treatise on Invertebrate Paleontology published in 1965 placed emphasis on internal characters (including the cardinal process) as diagnostic, whereas the 2000 revision primarily used external features and shell shape, resulting in differing classification of these clades.[2]
More recently, Leighton & Maples (2002) conducted multiple phylogenetic analyses which are strongly in agreement that the four subfamilies Echinoconchinae, Buxtoniinae, Pustulinae and Juresaniinae form the family Echinoconchidae. The cladogram results of their phylogenetic analyses are displayed in the cladogram below:[3]
^Stehli, Francis Greenough (1954). "Lower Leonardian Brachiopoda of the Sierra Diablo". Bulletin of the AMNH. 105 (3): 261–358.
^Williams, Alwyn (2000). Part H Brachiopoda (revised): Volumes 2 & 3, Linguliformea, Craniiformea, Rhynchonelliformea (part)., Treatise on Invertebrate Paleontology. Geological Society of America. p. 509.
^Leighton, Lindsey R.; Maples, Christopher G. (July 2002). "Evaluating internal versus external characters: Phylogenetic analyses of the Echinoconchidae, Buxtoniinae, and Juresaniinae (Phylum Brachiopoda)". Journal of Paleontology. 76 (4): 659. doi:10.1666/0022-3360(2002)076<0659:EIVECP>2.0.CO;2. ISSN 0022-3360.
December 15, 2023
echinoconchinae, extinct, subfamily, brachiopods, which, lived, during, carboniferous, permian, periods, marine, habitats, family, cosmopolitan, distribution, temporal, range, visean, upper, permian, preꞒ, nfossils, echinoconchus, along, with, other, brachiopo. Echinoconchinae is an extinct subfamily of brachiopods which lived during the Carboniferous and Permian periods in marine habitats The family had a cosmopolitan distribution 1 EchinoconchinaeTemporal range Visean Upper Permian PreꞒ Ꞓ O S D C P T J K Pg NFossils of Echinoconchus 13 26 along with other brachiopodsScientific classificationDomain EukaryotaKingdom AnimaliaPhylum BrachiopodaClass StrophomenataOrder ProductidaFamily EchinoconchidaeSubfamily EchinoconchinaeStehli 1954Subgroups Calliprotoniini Calliprotonia Echinoconchini Chengxianoproductus Echinaria Echinoconchus Stepanoconchus Karavankinini Echinoconchella KaravankinaTaxonomy editThe exact evolutionary relationships of Echinoconchinae relative to other groups of the suborder Productidina have been a matter of extensive debate throughout much of the 20th Century primarily due to the three genera Buxtonia Pustula and Juresania with the debate later expanded to their families and subfamilies shifting in position repeatedly between phylogenies and classifications The emphasis on internal versus external characters to determine the systematics of these groups has largely been responsible for this the original Treatise on Invertebrate Paleontology published in 1965 placed emphasis on internal characters including the cardinal process as diagnostic whereas the 2000 revision primarily used external features and shell shape resulting in differing classification of these clades 2 More recently Leighton amp Maples 2002 conducted multiple phylogenetic analyses which are strongly in agreement that the four subfamilies Echinoconchinae Buxtoniinae Pustulinae and Juresaniinae form the family Echinoconchidae The cladogram results of their phylogenetic analyses are displayed in the cladogram below 3 ProductellaPraewaagenoconchaSentosiaLeioproductusSpinocariniferaDiaphragmusAntiquatoniaFlexariaBuxtoniaPustulaEchinoconchusEchinariaPulchratiaParajuresaniaReferences edit Stehli Francis Greenough 1954 Lower Leonardian Brachiopoda of the Sierra Diablo Bulletin of the AMNH 105 3 261 358 Williams Alwyn 2000 Part H Brachiopoda revised Volumes 2 amp 3 Linguliformea Craniiformea Rhynchonelliformea part Treatise on Invertebrate Paleontology Geological Society of America p 509 Leighton Lindsey R Maples Christopher G July 2002 Evaluating internal versus external characters Phylogenetic analyses of the Echinoconchidae Buxtoniinae and Juresaniinae Phylum Brachiopoda Journal of Paleontology 76 4 659 doi 10 1666 0022 3360 2002 076 lt 0659 EIVECP gt 2 0 CO 2 ISSN 0022 3360 Retrieved from https en wikipedia org w index php title Echinoconchinae amp oldid 1178627944, wikipedia, wiki, book, books, library,
