Boliviacrinus isaacsoni, a New Genus and Species of Middle Devonian Camerate Crinoid from Bolivia
Boliviacrinus isaacsoni n. gen. and sp. is only the second Devonian crinoid to be described from Bolivia. This Middle Devonian (Eifelian) species, one of the youngest members of the monocyclic camerate crinoid family Patelliocrinidae, represents an end member of a distinctly conservative lineage wit...
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| Veröffentlicht in: | Journal of paleontology 1988-07, Vol.62 (4), p.622-626 |
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| container_title | Journal of paleontology |
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| creator | McIntosh, George Clay |
| description | Boliviacrinus isaacsoni n. gen. and sp. is only the second Devonian crinoid to be described from Bolivia. This Middle Devonian (Eifelian) species, one of the youngest members of the monocyclic camerate crinoid family Patelliocrinidae, represents an end member of a distinctly conservative lineage within a predominantly Silurian family. While the cup in Boliviacrinus isaacsoni became more complex by increasing the number of fixed brachials and interbrachials, such primitive features as relatively large, hexagonal-shaped first primibrachials and heptagonal-shaped primaxils, a clearly distinct posterior interray, and uniserial arms were retained. |
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This Middle Devonian (Eifelian) species, one of the youngest members of the monocyclic camerate crinoid family Patelliocrinidae, represents an end member of a distinctly conservative lineage within a predominantly Silurian family. While the cup in Boliviacrinus isaacsoni became more complex by increasing the number of fixed brachials and interbrachials, such primitive features as relatively large, hexagonal-shaped first primibrachials and heptagonal-shaped primaxils, a clearly distinct posterior interray, and uniserial arms were retained.</description><identifier>ISSN: 0022-3360</identifier><identifier>EISSN: 1937-2337</identifier><language>eng</language><publisher>Paleontological Society</publisher><subject>Antarctic regions ; Biological taxonomies ; Calyx ; Evolution ; Fauna ; Fossils ; Genera ; Geology ; Holotypes ; New genus</subject><ispartof>Journal of paleontology, 1988-07, Vol.62 (4), p.622-626</ispartof><rights>Copyright 1988 The Paleontological Society</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://www.jstor.org/stable/pdf/1305465$$EPDF$$P50$$Gjstor$$H</linktopdf><linktohtml>$$Uhttps://www.jstor.org/stable/1305465$$EHTML$$P50$$Gjstor$$H</linktohtml><link.rule.ids>314,776,780,799,57992,58225</link.rule.ids></links><search><creatorcontrib>McIntosh, George Clay</creatorcontrib><title>Boliviacrinus isaacsoni, a New Genus and Species of Middle Devonian Camerate Crinoid from Bolivia</title><title>Journal of paleontology</title><description>Boliviacrinus isaacsoni n. gen. and sp. is only the second Devonian crinoid to be described from Bolivia. This Middle Devonian (Eifelian) species, one of the youngest members of the monocyclic camerate crinoid family Patelliocrinidae, represents an end member of a distinctly conservative lineage within a predominantly Silurian family. While the cup in Boliviacrinus isaacsoni became more complex by increasing the number of fixed brachials and interbrachials, such primitive features as relatively large, hexagonal-shaped first primibrachials and heptagonal-shaped primaxils, a clearly distinct posterior interray, and uniserial arms were retained.</description><subject>Antarctic regions</subject><subject>Biological taxonomies</subject><subject>Calyx</subject><subject>Evolution</subject><subject>Fauna</subject><subject>Fossils</subject><subject>Genera</subject><subject>Geology</subject><subject>Holotypes</subject><subject>New genus</subject><issn>0022-3360</issn><issn>1937-2337</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>1988</creationdate><recordtype>article</recordtype><recordid>eNotj01LxDAURYMoWEf_gYusXFnIV9N0qVVHYdSFui6vyStkaJuadEb891ZmVhfuPRy4JyTjlSxzIWV5SjLGhMil1OycXKS0ZYwLzXlG4D70fu_BRj_uEvUJwKYw-lsK9A1_6Br_axgd_ZjQekw0dPTVO9cjfcD9QsJIaxgwwoy0XizBO9rFMNCj-ZKcddAnvDrminw9PX7Wz_nmff1S321yEMLMuUHGUXXKSdPq1uq2lUVVSWdYKWwnjelMhZxbg6JqdbWMxpRYKm20Vnx5uSI3B-8Uw_cO09wMPlnsexgx7FLDC8V1wdkCXh_AbZpDbKboB4i_DZesULqQfwSTW00</recordid><startdate>19880701</startdate><enddate>19880701</enddate><creator>McIntosh, George Clay</creator><general>Paleontological Society</general><scope>F1W</scope><scope>H95</scope><scope>L.G</scope></search><sort><creationdate>19880701</creationdate><title>Boliviacrinus isaacsoni, a New Genus and Species of Middle Devonian Camerate Crinoid from Bolivia</title><author>McIntosh, George Clay</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-a228t-8e01e4f4d38b6bc6bb35993d8072cf388f89e11c8e29b69359887e74686641233</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>1988</creationdate><topic>Antarctic regions</topic><topic>Biological taxonomies</topic><topic>Calyx</topic><topic>Evolution</topic><topic>Fauna</topic><topic>Fossils</topic><topic>Genera</topic><topic>Geology</topic><topic>Holotypes</topic><topic>New genus</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>McIntosh, George Clay</creatorcontrib><collection>ASFA: Aquatic Sciences and Fisheries Abstracts</collection><collection>Aquatic Science & Fisheries Abstracts (ASFA) 1: Biological Sciences & Living Resources</collection><collection>Aquatic Science & Fisheries Abstracts (ASFA) Professional</collection><jtitle>Journal of paleontology</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>McIntosh, George Clay</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Boliviacrinus isaacsoni, a New Genus and Species of Middle Devonian Camerate Crinoid from Bolivia</atitle><jtitle>Journal of paleontology</jtitle><date>1988-07-01</date><risdate>1988</risdate><volume>62</volume><issue>4</issue><spage>622</spage><epage>626</epage><pages>622-626</pages><issn>0022-3360</issn><eissn>1937-2337</eissn><abstract>Boliviacrinus isaacsoni n. gen. and sp. is only the second Devonian crinoid to be described from Bolivia. This Middle Devonian (Eifelian) species, one of the youngest members of the monocyclic camerate crinoid family Patelliocrinidae, represents an end member of a distinctly conservative lineage within a predominantly Silurian family. While the cup in Boliviacrinus isaacsoni became more complex by increasing the number of fixed brachials and interbrachials, such primitive features as relatively large, hexagonal-shaped first primibrachials and heptagonal-shaped primaxils, a clearly distinct posterior interray, and uniserial arms were retained.</abstract><pub>Paleontological Society</pub><tpages>5</tpages></addata></record> |
| fulltext | fulltext |
| identifier | ISSN: 0022-3360 |
| ispartof | Journal of paleontology, 1988-07, Vol.62 (4), p.622-626 |
| issn | 0022-3360 1937-2337 |
| language | eng |
| recordid | cdi_proquest_miscellaneous_15416510 |
| source | Jstor Complete Legacy |
| subjects | Antarctic regions Biological taxonomies Calyx Evolution Fauna Fossils Genera Geology Holotypes New genus |
| title | Boliviacrinus isaacsoni, a New Genus and Species of Middle Devonian Camerate Crinoid from Bolivia |
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