About: Acaroceratidae     Goto   Sponge   NotDistinct   Permalink

An Entity of Type : owl:Thing, within Data Space : dbpedia.org associated with source document(s)
QRcode icon
http://dbpedia.org/describe/?url=http%3A%2F%2Fdbpedia.org%2Fresource%2FAcaroceratidae

Acaroceratidae is family of Upper Cambrian (Trempealeauan) nautiloid cephalopods included in the Ellesmerocerida that contains two known genera, Acaroceras and Weishanuceras, both found in northern China. Acaroceratidae represent some of the earliest Ellesmeroderida, which have their origin in the Plectronoceratidae, either in Plectronoceras or some related genus. Acaroceras is known from the lower and middle Trempealeauan, upper and overlying members of the . Weishanuceras is so far limited to the Wanwankou.

AttributesValues
rdfs:label
  • Acaroceratidae (en)
rdfs:comment
  • Acaroceratidae is family of Upper Cambrian (Trempealeauan) nautiloid cephalopods included in the Ellesmerocerida that contains two known genera, Acaroceras and Weishanuceras, both found in northern China. Acaroceratidae represent some of the earliest Ellesmeroderida, which have their origin in the Plectronoceratidae, either in Plectronoceras or some related genus. Acaroceras is known from the lower and middle Trempealeauan, upper and overlying members of the . Weishanuceras is so far limited to the Wanwankou. (en)
dcterms:subject
Wikipage page ID
Wikipage revision ID
Link from a Wikipage to another Wikipage
sameAs
dbp:wikiPageUsesTemplate
authority
  • Chen et al, 1979 (en)
fossil range
  • Late Cambrian (en)
subdivision
  • See text (en)
subdivision ranks
  • Genera (en)
taxon
  • Acaroceratidae (en)
has abstract
  • Acaroceratidae is family of Upper Cambrian (Trempealeauan) nautiloid cephalopods included in the Ellesmerocerida that contains two known genera, Acaroceras and Weishanuceras, both found in northern China. Acaroceratidae represent some of the earliest Ellesmeroderida, which have their origin in the Plectronoceratidae, either in Plectronoceras or some related genus. Acaroceras is known from the lower and middle Trempealeauan, upper and overlying members of the . Weishanuceras is so far limited to the Wanwankou. The Acaroceratidae are characterized by small, slightly expanded, laterally compressed shells with a slight downward,(endogastric), curvature. Siphuncles are tubular, located along the ventral margin; composed of straight segments. In general conformation Acaroceras and Weishanuceras are rather similar, but differ in the details of the siphuncle. Acaroceras, the earlier of the two, has a siphuncle composed of short straight septal necks and thin straight connecting rings, and is empty of internal calcareous deposits. Rather thin, slightly concave diaphragms are present in the early, adapical, portion. Weishanuceras, which came later, also has short straight septal necks, but connecting rings are moderately thick as well as straight, and the siphuncle contains internal, ring-like deposits. Neither of the Acaroceratidae appears to have left any descendants. Early Acaroceras, from the upper Yenchou, are contemporary with later Plectronoceras, early Paraplectronoceras, Hunyuanoceras, and a few others. Later Acaroceras and Weishanuceras are part of the entire suite of early cephalopods that lived during the Late Cambrian. Acaroceras lends its name to the Acaroceras-Sinoceremoceras Zone which is contained by the Wanwankou member of the Fengshan Formation. (en)
gold:hypernym
prov:wasDerivedFrom
page length (characters) of wiki page
foaf:isPrimaryTopicOf
is Link from a Wikipage to another Wikipage of
is foaf:primaryTopic of
Faceted Search & Find service v1.17_git139 as of Feb 29 2024


Alternative Linked Data Documents: ODE     Content Formats:   [cxml] [csv]     RDF   [text] [turtle] [ld+json] [rdf+json] [rdf+xml]     ODATA   [atom+xml] [odata+json]     Microdata   [microdata+json] [html]    About   
This material is Open Knowledge   W3C Semantic Web Technology [RDF Data] Valid XHTML + RDFa
OpenLink Virtuoso version 08.03.3330 as of Mar 19 2024, on Linux (x86_64-generic-linux-glibc212), Single-Server Edition (378 GB total memory, 59 GB memory in use)
Data on this page belongs to its respective rights holders.
Virtuoso Faceted Browser Copyright © 2009-2024 OpenLink Software