Kurochkin's pygmy owl (Glaucidium kurochkini) is an extinct species of pygmy owl that existed in what is now California, U.S. during the Late Pleistocene Epoch.[1][2]
The holotype of Glaucidium kurochkini is LACM RLB K9630, a left tarsometatarsus. The paratypes are left and right tarsometatarsi, LACM(CIT) 155031 and LACM(CIT) 155032, respectively. All three specimens come from the La Brea Tar Pits in Los Angeles, California. They all also persist to the Pit A in Bliss 29 of the area. Other possible specimens that are from the area but cannot be certainly assigned to G. kurochkini are K9631, a proximal left mandible; K9632, a complete right mandible; K9210, a complete right coracoid; G50, a complete left humerus; K9635, a proximal end of a right radius; K9404, a complete right carpometacarpus; K9350, a complete left femur; K984, a complete left tibiotarsus; and K9402, K9422, and K9423, all left tibiotarsi.[1]
G. kurochkini can be assigned to Glaucidium with certainty, because it shows the features distinguishing it from Aegolius, even if the two genera are almost identical. These features can distinguish G. kurochkini from all other Glaucidium species: a crista lateralis hypotarsi that is short, broad, robust, and projecting equally proximally and laterally; an eminentia intercotylaris that is long anteroposteriorly; the presence of a cotyla medialis with the rim, in anterior view, essentially even with side of shaft; a facies medialis that is wide proximally and lateral to the crista medialis hypotarsi; a sulcus extensorius that does not extend distally to the tuberositas medialis tibialis anticus; and a trochlea metatarsi II with an anterior medial edge relatively straight in anterior view.[1]
Comparison of the true owls Oraristrix brea (larger), and G. kurochkini, of Late Pleistocene, Southern California
Asphaltoglaux, a very similar species also known from the La Brea Tar Pits
Oraristrix, another, much larger owl from the La Brea Tar Pits
Referencesedit
^ abcdCampbell, K.E. Jr.; Bocheński, Z.M. (2013). "Two new late Pleistocene miniature owls from Rancho La Brea, California". Acta Palaeontologica Polonica. 58 (4): 707–721. doi:10.4202/app.2011.0125.
^"Glaucidium kurochkini (Kurochkin's pygmy owl) - The Recently Extinct Plants and Animals Database". The Recently Extinct Plants and Animals Database (REPAD). Retrieved 2021-02-19.
December 19, 2023
kurochkin, pygmy, glaucidium, kurochkini, extinct, species, pygmy, that, existed, what, california, during, late, pleistocene, epoch, temporal, range, late, pleistocene, preꞒ, glaucidium, kurochkini, holotype, tarsometatarsus, multiple, viewsscientific, classi. Kurochkin s pygmy owl Glaucidium kurochkini is an extinct species of pygmy owl that existed in what is now California U S during the Late Pleistocene Epoch 1 2 Kurochkin s pygmy owlTemporal range Late Pleistocene 0 05 Ma PreꞒ Ꞓ O S D C P T J K Pg N Glaucidium kurochkini holotype tarsometatarsus in multiple viewsScientific classificationDomain EukaryotaKingdom AnimaliaPhylum ChordataClass AvesOrder StrigiformesFamily StrigidaeGenus GlaucidiumSpecies G kurochkiniBinomial name Glaucidium kurochkiniCampbell et al 2013 Contents 1 Discovery and naming 1 1 Etymology 2 Distinguishing anatomical features 3 See also 4 ReferencesDiscovery and naming editThe holotype of Glaucidium kurochkini is LACM RLB K9630 a left tarsometatarsus The paratypes are left and right tarsometatarsi LACM CIT 155031 and LACM CIT 155032 respectively All three specimens come from the La Brea Tar Pits in Los Angeles California They all also persist to the Pit A in Bliss 29 of the area Other possible specimens that are from the area but cannot be certainly assigned to G kurochkini are K9631 a proximal left mandible K9632 a complete right mandible K9210 a complete right coracoid G50 a complete left humerus K9635 a proximal end of a right radius K9404 a complete right carpometacarpus K9350 a complete left femur K984 a complete left tibiotarsus and K9402 K9422 and K9423 all left tibiotarsi 1 Etymology edit G kurochkini was named in 2013 by Campbell et al in honor of the late Evgeny N Kurochkin ornithologist and paleornithologist from the Paleontological Institute of the Russian Academy of Sciences for his leading role in Russian ornithology and his many important contributions to the understanding of avian evolution 1 Distinguishing anatomical features editG kurochkini can be assigned to Glaucidium with certainty because it shows the features distinguishing it from Aegolius even if the two genera are almost identical These features can distinguish G kurochkini from all other Glaucidium species a crista lateralis hypotarsi that is short broad robust and projecting equally proximally and laterally an eminentia intercotylaris that is long anteroposteriorly the presence of a cotyla medialis with the rim in anterior view essentially even with side of shaft a facies medialis that is wide proximally and lateral to the crista medialis hypotarsi a sulcus extensorius that does not extend distally to the tuberositas medialis tibialis anticus and a trochlea metatarsi II with an anterior medial edge relatively straight in anterior view 1 nbsp Comparison of the true owls Oraristrix brea larger and G kurochkini of Late Pleistocene Southern CaliforniaSee also edit nbsp Birds portal nbsp Paleontology portalAsphaltoglaux a very similar species also known from the La Brea Tar Pits Oraristrix another much larger owl from the La Brea Tar PitsReferences edit a b c d Campbell K E Jr Bochenski Z M 2013 Two new late Pleistocene miniature owls from Rancho La Brea California Acta Palaeontologica Polonica 58 4 707 721 doi 10 4202 app 2011 0125 Glaucidium kurochkini Kurochkin s pygmy owl The Recently Extinct Plants and Animals Database The Recently Extinct Plants and Animals Database REPAD Retrieved 2021 02 19 Retrieved from https en wikipedia org w index php title Kurochkin 27s pygmy owl amp oldid 1162576994, wikipedia, wiki, book, books, library,
