New Blattarians and a Review of Dictyopteran Assemblages from the Lower Cretaceous of Mongolia

Vršanský, Peter

doi:10.4202/app.2008.0109

Cited by 43 publications

(16 citation statements)

References 5 publications

(2 reference statements)

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“…Genitalia, which are among the most phylogenetically informative characters for cockroaches (Roth, 1970;Grandcolas, 1996;Klass, 1997;Klass, 2001; Klass and Meier, 2006), are rarely discernible in cockroach impression fossils. The most commonly preserved features are wings, usually the more sclerotized front wings (tegmina) (e.g., Anisyutkin et al, 2008;Vršanský, 2008). Unfortunately, morphological characters in the wings typically do not give a strong indication of taxonomic identity due to the abundance of plesiomorphic and homoplastic characters (discussed in Klass, 2001;Ross, 2012;Djernaes et al, 2015;pers. obs.…”

Section: Introductionmentioning

confidence: 99%

Fossil calibrations for the cockroach phylogeny (Insecta, Dictyoptera, Blattodea), comments on the use of wings for their identification, and a redescription of the oldest Bla

Evangelista

Djernæs

Kohli

2017

Palaeontologia Electronica

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Section: Introductionmentioning

confidence: 99%

Fossil calibrations for the cockroach phylogeny (Insecta, Dictyoptera, Blattodea), comments on the use of wings for their identification, and a redescription of the oldest Bla

Evangelista

Djernæs

Kohli

2017

Palaeontologia Electronica

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“…Blattulidae are also dominant in the Yixian formation (Late Jurassic/Early Cretaceous) of northern China (Wang et al 2007b). The Crato dictyopterans (see also Lee 2014) show similarities with those at the Cretaceous localities of Mongolia (e.g., Vršanský 2003bVršanský , 2008b and Chernovskie Kopi in Russia (Barna 2014), namely Chaeteessidae, Ectobiidae, Blattulidae and Umenocoleidae. The Upper Jurassic assemblage from Shar-Teg (Mongolia) shows a more even cockroach assemblage with Blattulidae (38 %), Mesoblattinidae (25 %), Liberiblattinidae (13 %) and Caloblattinidae (25%) (Vršanský 2005 b, c;Barna 2014).…”

Section: Discussionmentioning

confidence: 88%

Taxonomic diversity of cockroach assemblages (Blattaria, Insecta) of the Aptian Crato Formation (Cretaceous, NE Brazil)

Lee¹

2016

Geologica Carpathica

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A comprehensive revision of 981 specimens of fossil cockroaches from the Lower Cretaceous laminated limestones of the Crato Formation of Northeast Brazil shows that they belong to eleven taxa, including Piniblattella limai, P. magna sp. n., Perlucipecta santanensis. sp. n., Raptoblatta waddingtonae; Ocelloblattula santanensis sp. n., Elisama brevis (= E. americana, syn.n.), E. hindwingnii sp. n., Ponopterix axelrodi (= P. maxima syn.n.), Umenopterix burkhardi comb. n., and Cratovitisma oldreadi (Umenocoleidae = Cratovitismidae syn.n. = Ponopterixidae syn.n.). The family Ectobiidae is numerically most abundant in the assemblage of cockroaches of the Crato Formation (83 % of cockroaches), followed by Blattulidae (13 %) and Umenocoleidae (4 %). 79.2 % of specimens are complete and fully articulated. Members of the family Alienopteridae are probably also present. Representatives of a relatively common Mesozoic superfamily Caloblattinoidea are missing. With the exception of the endemic genera Cratovitisma and Raptoblatta and the exclusively Gondwanan genus Ocelloblattula, all other genera were cosmopolitan. Taxonomic richness of cockroaches of the Crato Formation is thus rather low, and consists of geologically longranging and geographically-widespread genera, genera restricted to Gondwana, and short-ranging endemic genera found in the Crato Formation only.

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“…Termites can also be considered for the earliest Cretaceous elements (Vršanský & Aristov 2014), but the Tithonian Late Jurassic Shar-Teg locality actually has Cretaceous-type fauna with occurrence of a mantodean (Vršanský 2004). The cockroaches unambiguously indicate the Jurassic age, although the genus Archimesoblatta is also present in the Mongolian localities of Bon Tsagaan Nuur (and Shar-Tologoy) (Vršanský 2008a), whose sedimentary layers are generally considered Lower Cretaceous, although the lowermost layers consist of exclusively Jurassic fauna. Therefore, it cannot be certainly stated whether the lowermost layers of Bon Tsagaan Nuur (Bed 23/22) as well as the assemblage of Chernovskie Kopi described here are of Early Cretaceous age.…”

Section: Discussionmentioning

confidence: 92%

Low diversity cockroach assemblage from Chernovskie Kopi in Russia confirms wing deformities in insects at the Jurassic/Cretaceous boundary

Barna

2014

Biologia

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Abstract:The Jurassic/Cretaceous (J/K) boundary is of great importance for the evolution of cockroaches as 6 (of the total of 27) families and orders of termites and mantodeans evolved from them during this interval. The Jurassic affinities of most taxa and a complete lack of any characteristic Cretaceous cockroach taxa combined with the presence of two termites indicate a position close to the J/K stratigraphic boundary for the locality Chernovskie Kopi in Transbaikalian Siberia. Among 41 specimens the dominant species was Blattula discors sp. n. (n = 14 (15?)) closely related to Blattula vidlickai Vršanský, 2004 from the roughly coeval locality Shar-Teg in Mongolia. Rhipidoblattina lacunata sp. n. (Caloblattinidae; n = 10) and Archimesoblatta kopi sp. n. were common, while Mongolblatta sanguinea sp. n. (Mesoblattinidae; n = 6, 1) and Rhipidoblatta grandis sp. n. (Caloblattinidae; n = 2) were rare. Six specimens, all possibly representing an unknown genus of the family Liberiblattinidae remain indetermined. Such composition of an assemblage with a low diversity, resulting from a destabilized ecosystem resembles Early Jurassic assemblages from Mintaja, Australia and diverse Toarcian localities in Germany and England rather than Middle or Late Jurassic assemblages. The present samples also contain plant remains. The almost complete lack of bodies, pronota and hind wings suggest a significant transport prior to deposition. Twenty deformities distributed on nine wings amounting to 22.5% of wings support the occurrence of mass mutations near the J/K boundary.

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New Blattarians and a Review of Dictyopteran Assemblages from the Lower Cretaceous of Mongolia

Cited by 43 publications

References 5 publications

Fossil calibrations for the cockroach phylogeny (Insecta, Dictyoptera, Blattodea), comments on the use of wings for their identification, and a redescription of the oldest Bla

Fossil calibrations for the cockroach phylogeny (Insecta, Dictyoptera, Blattodea), comments on the use of wings for their identification, and a redescription of the oldest Bla

Taxonomic diversity of cockroach assemblages (Blattaria, Insecta) of the Aptian Crato Formation (Cretaceous, NE Brazil)

Low diversity cockroach assemblage from Chernovskie Kopi in Russia confirms wing deformities in insects at the Jurassic/Cretaceous boundary

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