Captopodus is an extinct genus of stem-mandibulate known from the Early Devonian. This creature was described in 2012 from four fossils found in the Hunsrück Slate, an early Devonian lagerstätten in Germany that represents one of the few marine sites from the Devonian with soft tissue preservation.[1][2]
Captopodus
Temporal range: Latest Pragian - Emsian 408–400 Ma
Captopodus is a vermiform (worm-like) arthropod, with over 66 trunk segments each containing a biramous limb pair, with the final segment containing a caudal furca. The head region contains two pairs of appendages, one being antennae, and the other resembling the grasping legs of thylacocephalans. It also has cupola-like structures, the function of which is unknown. The animal measures five to ten centimetres long. It is also very similar to, and probably related to the animal Acheronauta, from the Waukesha Biota.[1][3]
Ecologyedit
Captopodus seems to have been a scavenger or ambush predator, based on thylacocephalans such as Dollocaris.
Etymologyedit
Captopodus derives from the words "capto" ("grasp") and "podus" ("appendage"). The species name poschmanni derives from Markus Poschmann, who has done preparatory and scientific work on a number of Hunsrück Slate animals.[1]
Classificationedit
When first described in 2012, C. poschmanni was regarded as a basal stem-arthropod, however more recent studies have placed it specifically as a stem-mandibulate. In 2022 when describing Acheronauta, C. poschmanni was placed in a clade formed alongside A.stimulapis and the thylacocephalans as basal mandibulates. The cladogram below shows the position of C. poschmanni in relation to other arthropods based on the findings of Pulsipher et al. (2022).[1][3]
^ abcdKühl, Gabriele (28 June 2012). "Captopodus poschmanni gen. et sp. nov. a new stem-group arthropod from the Lower Devonian Hunsrück Slate (Germany)". Arthropod Structure & Development. doi:10.1016/j.asd.2012.06.004.
^Butterfield, Nicholas J. (2003). "Exceptional Fossil Preservation and the Cambrian Explosion". Integrative and Comparative Biology. 43 (1): 166–177. doi:10.1093/icb/43.1.166. PMID 21680421.
^ abPulsipher, M. A.; Anderson, E. P.; Wright, L. S.; Kluessendorf, J.; Mikulic, D. G.; Schiffbauer, J. D. (2022). "Description of Acheronauta gen. nov., a possible mandibulate from the Silurian Waukesha Lagerstätte, Wisconsin, USA". Journal of Systematic Palaeontology. 20 (1). 2109216. doi:10.1080/14772019.2022.2109216. S2CID 252839113.
January 01, 1970
captopodus, extinct, genus, stem, mandibulate, known, from, early, devonian, this, creature, described, 2012, from, four, fossils, found, hunsrück, slate, early, devonian, lagerstätten, germany, that, represents, marine, sites, from, devonian, with, soft, tiss. Captopodus is an extinct genus of stem mandibulate known from the Early Devonian This creature was described in 2012 from four fossils found in the Hunsruck Slate an early Devonian lagerstatten in Germany that represents one of the few marine sites from the Devonian with soft tissue preservation 1 2 CaptopodusTemporal range Latest Pragian Emsian 408 400 Ma PreꞒ Ꞓ O S D C P T J K Pg N Scientific classification Domain Eukaryota Kingdom Animalia Phylum Arthropoda Genus CaptopodusKuhl amp Rust 2012 Species C poschmanni Binomial name Captopodus poschmanniKuhl amp Rust 2012 Contents 1 Description 2 Ecology 3 Etymology 4 Classification 5 ReferencesDescription editCaptopodus is a vermiform worm like arthropod with over 66 trunk segments each containing a biramous limb pair with the final segment containing a caudal furca The head region contains two pairs of appendages one being antennae and the other resembling the grasping legs of thylacocephalans It also has cupola like structures the function of which is unknown The animal measures five to ten centimetres long It is also very similar to and probably related to the animal Acheronauta from the Waukesha Biota 1 3 Ecology editCaptopodus seems to have been a scavenger or ambush predator based on thylacocephalans such as Dollocaris Etymology editCaptopodus derives from the words capto grasp and podus appendage The species name poschmanni derives from Markus Poschmann who has done preparatory and scientific work on a number of Hunsruck Slate animals 1 Classification editWhen first described in 2012 C poschmanni was regarded as a basal stem arthropod however more recent studies have placed it specifically as a stem mandibulate In 2022 when describing Acheronauta C poschmanni was placed in a clade formed alongside A stimulapis and the thylacocephalans as basal mandibulates The cladogram below shows the position of C poschmanni in relation to other arthropods based on the findings of Pulsipher et al 2022 1 3 Arthropoda Parioscorpio venator Cascolus ravitis Tanazios dokeron Captopodus poschmanni Acheronauta stimulapis Thylacocephala Occacaris oviformis Myriapoda Ercaicunia multinodosa Clypecaris pteroidea Waptia fieldensis Perspicaris dictynna Canadaspis perfecta Tokummia katalepsis Branchiocaris pretiosa Nereocaris exilis Odaria alata Euthycarcinoidea Fuxianhuiida Fuxianhuia Chengjiangocaris Shankouia Pancrustacea Argulus Ostracoda Lepidocaris Triops Artemia Remipedia Cephalocarida Hexapoda Multicrustacea HymenocarinaReferences edit a b c d Kuhl Gabriele 28 June 2012 Captopodus poschmanni gen et sp nov a new stem group arthropod from the Lower Devonian Hunsruck Slate Germany Arthropod Structure amp Development doi 10 1016 j asd 2012 06 004 Butterfield Nicholas J 2003 Exceptional Fossil Preservation and the Cambrian Explosion Integrative and Comparative Biology 43 1 166 177 doi 10 1093 icb 43 1 166 PMID 21680421 a b Pulsipher M A Anderson E P Wright L S Kluessendorf J Mikulic D G Schiffbauer J D 2022 Description of Acheronauta gen nov a possible mandibulate from the Silurian Waukesha Lagerstatte Wisconsin USA Journal of Systematic Palaeontology 20 1 2109216 doi 10 1080 14772019 2022 2109216 S2CID 252839113 Retrieved from https en wikipedia org w index php title Captopodus amp oldid 1187846881, wikipedia, wiki, book, books, library,
