PBDB Taxon

Basic info	Taxonomic history	Classification	Included Taxa
Morphology	Ecology and taphonomy	External Literature Search	Age range and collections

Mylacridae

Insecta - Blattodea - Mylacridae

Taxonomy

Mylacridae was named by Scudder (1879).

It was misspelled as Mylacrididae by Zeuner (1955); it was reranked as the family Mylacridae by Handlirsch (1906), Handlirsch (1911), Tillyard (1916), Pruvost (1919), Handlirsch (1922), Tillyard (1923), Cockerell (1927), Durden (1969), Schneider (1983), Martens et al. (2005), Jarzembowski and Schneider (2007).

It was assigned to Palaeoblattariae by Scudder (1879), Scudder (1885), Scudder (1886), Scudder (1893), Scudder (1895), Sellards (1904); to Blattariae by Handlirsch (1922); to Blattoidea by Handlirsch (1906), Handlirsch (1911), Pruvost (1919), Cockerell (1927), Zeuner (1955); to Mylacroidea by Durden (1969); to Insecta by Martens et al. (2005); and to Blattodea by Tillyard (1916), Tillyard (1923), Schneider (1983), Jarzembowski and Schneider (2007).

Synonyms

Blattina bretonensis was named by Scudder (1875). It is an impression. Its type locality is Sydney coalfield, Cape Breton (Brown collection), which is in a Westphalian C/Westphalian D terrestrial shale in Canada.

It was recombined as Mylacris bretonense by Scudder (1879), Scudder (1884); it was recombined as Mylacris bretonensis by Scudder (1895); it was considered a nomen dubium by Handlirsch (1906).
Paromylacris ampla was named by Scudder (1890). It is an impression. Its type locality is Mazon Creek, USNM Lacoe Collection, which is in a Westphalian D interdistributary bay mudstone in the Carbondale Formation of Illinois.

It was considered a nomen dubium by Handlirsch (1906).
Neorthroblattinidae was named by Handlirsch (1906).

It was synonymized subjectively with Mylacridae by Schneider (1983).

It was assigned to Blattoidea by Handlirsch (1906); and to Blattodea by Laurentiaux-Vieira and Laurentiaux (1980).
Idiomylacridae was named by Handlirsch (1906). Its type is Idiomylacris.

It was synonymized subjectively with Neorthroblattinidae by Schneider (1983).

It was assigned to Blattoidea by Handlirsch (1906); and to Phoberoblattoidea by Durden (1969).

Synonymy list

Year	Name and author
1875	Blattina bretonensis Scudder p. 271 fig. 1
1879	Mylacridae Scudder
1879	Mylacris bretonense Scudder p. 41
1884	Mylacris bretonense Scudder p. 300
1885	Mylacridae Scudder p. 34
1886	Mylacridae Scudder p. 211
1890	Paromylacris ampla Scudder p. 408 figs. Pl 31, fig 7
1893	Mylacridae Scudder
1895	Mylacridae Scudder p. 40
1895	Mylacris bretonensis Scudder p. 41
1895	Paromylacris ampla Scudder p. 51 figs. Pl III fig 4
1904	Mylacridae Sellards
1906	Mylacridae Handlirsch p. 258
1906	Neorthroblattinidae Handlirsch p. 275
1906	Idiomylacridae Handlirsch p. 283
1906	Neorthroblattinidae Handlirsch p. 790
1911	Mylacridae Handlirsch
1916	Mylacridae Tillyard
1919	Mylacridae Pruvost p. 192
1922	Mylacridae Handlirsch p. 174
1923	Mylacridae Tillyard
1927	Mylacridae Cockerell p. 405
1955	Mylacrididae Zeuner p. 685
1969	Idiomylacridae Durden p. 1172
1969	Mylacridae Durden p. 1173
1980	Neorthroblattinidae Laurentiaux-Vieira and Laurentiaux p. 176
1983	Mylacridae Schneider p. 111
2005	Mylacridae Martens et al.
2007	Mylacridae Jarzembowski and Schneider p. 451

Is something missing? Join the Paleobiology Database and enter the data

Rank	Name	Author
kingdom	Animalia	()
—	Bilateria
—	Eubilateria	Ax 1987
—	Protostomia
—	Ecdysozoa	Aguinaldo et al. 1997
—	Panarthropoda
phylum	Arthropoda	Latreille 1829
—	Deuteropoda
—	Mandibulata
—	Pancrustacea	Zrzavý and Štys 1997
—	Altocrustacea	Regier et al. 2010
superclass	Allotriocarida
—	Athalassocarida
—	Labiocarida	Schwentner et al. 2017

Rank	Name	Author
superclass	Hexapoda	Latreille 1825
—	Cercofilata
class	Insecta
—	Dicondylia
—	Paranotalia
subclass	Pterygota	()
—	Neopterygota	Crampton 1924
infraclass	Neoptera	Martynov 1923
—	Polyneoptera	Martynov 1938
—	Holopandictyoptera
superorder	Dictyoptera	Latreille 1829
order	Blattodea	(Latreille 1810)
family	Mylacridae	()
family	Mylacridae	()

If no rank is listed, the taxon is considered an unranked clade in modern classifications. Ranks may be repeated or presented in the wrong order because authors working on different parts of the classification may disagree about how to rank taxa.

Fm. †Mylacridae Scudder 1879

show all | hide all

G. †Amblymylacris Handlirsch 1906

†Amblymylacris clintoniana Scudder 1895

†Amblymylacris harei Scudder 1895

Invalid names: Amblymylacris (Cursimylacris) Durden 1972 [nomen nudum]

G. †Aphelomylacris Handlirsch 1906

†Aphelomylacris modesta Handlirsch 1906

†Aphelomylacris singularis Handlirsch 1906

Invalid names: Aphelomylacris (Eomylacris) Durden 1972 [nomen nudum], Aphelomylacris coalburnensis Durden 1972 [nomen nudum]

G. †Austromylacrites Tillyard 1916

†Austromylacrites latus Tillyard 1916

G. †Cathayiblatta Li et al. 2007

†Cathayiblatta longata Li et al. 2007

G. †Cyphomylacris Cockerell 1927

†Cyphomylacris atrata Cockerell 1927

†Cyphomylacris saclieri Pruvost 1919

G. †Dictyomylacris Brongniart 1894

†Dictyomylacris densistriate Müller 1975

†Dictyomylacris elegans Handlirsch 1906

†Dictyomylacris insignis Brongniart 1894

Invalid names: Dictyomylacris analis Handlirsch 1937 [synonym], Dictyomylacris angustior Handlirsch 1937 [synonym], Dictyomylacris medialis Handlirsch 1937 [synonym], Dictyomylacris poiraulti Brongniart 1894 [synonym], Dictyomylacris subcostalis Handlirsch 1937 [synonym], Etoblattina (Metaxyblatta) minuscula Meunier 1921 [synonym], Etoblattina (Metaxyblatta) perturbata Meunier 1921 [synonym], Lithomylacris elegantula Meunier 1921 [synonym], Mesitoblatta brongniarti Handlirsch 1906 [synonym]

†Dictyomylacris jacobsi Meunier 1907

†Dictyomylacris montagnei Pruvost 1912

†Dictyomylacris multinervis Sellards 1904

Invalid names: Stenomylacris Handlirsch 1906 [synonym]

G. †Drybrookia Bolton 1924

†Drybrookia cubitalis Bolton 1924

G. †Etomylacris Handlirsch 1920

†Etomylacris burri Bolton 1912

†Etomylacris straeleni Santos et al. 2025

G. †Goniomylacris Handlirsch 1906

†Goniomylacris pauper Handlirsch 1906

Subfm. †Hemimylacrinae Pruvost 1919

G. †Brachymylacris Handlirsch 1906

Subg. †Brachymylacris (Brachymylacris) Handlirsch 1906

Invalid names: Brachymylacris (Brachymylacris) mclellanensis Durden 1972 [nomen nudum]

†Brachymylacris bassleri Cockerell 1918

†Brachymylacris elongata Handlirsch 1906

Invalid names: Brachymylacris cordata Handlirsch 1906 [synonym], Brachymylacris mixta Handlirsch 1906 [synonym]

†Brachymylacris martini Cockerell 1927

†Brachymylacris nodulata Bolton 1934

†Brachymylacris rotundata Handlirsch 1906

†Brachymylacris striolatus Handlirsch 1906

Invalid names: Brachymylacris (Bellamylacris) Durden 1972 [nomen nudum], Brachymylacris (Stellamylacris) Durden 1972 [nomen nudum]

G. †Hemimylacrella Handlirsch 1922

†Hemimylacrella leptophlebiopsis Becker-Migdisova 1961

†Hemimylacrella mammothi Carpenter 1934

G. †Hemimylacris Handlirsch 1906

†Hemimylacris ampla Waterlot 1934

†Hemimylacris bassleri Cockerell 1927

†Hemimylacris clintoniana Scudder 1895

†Hemimylacris ramificata Handlirsch 1906

Invalid names: Loxoblatta Cockerell 1927 [synonym]

G. †Lusitanomylacris Teixeira 1939

†Lusitanomylacris pruvosti Teixeira 1939

G. †Shanxiblatta Hong 1980

†Shanxiblatta striata Hong 1980

†Shanxiblatta suni Hong 1980

G. †Stephanomylacris Teixeira 1941

†Stephanomylacris duriensis Teixeira 1941

†Stephanomylacris zbyszewskii Teixeira 1941

Invalid names: Acadiemylacris Durden 1972 [nomen nudum], Blattina sepulta Scudder 1876 [nomen dubium], Pinnamylacris Durden 1972 [nomen nudum], Quasimylacris Durden 1972 [nomen nudum]

G. †Moravamylacris Schneider 1980

†Moravamylacris kukalovae Schneider 1980

†Moravamylacris ricanyensis Schneider 1980

†Mylacridae carbonina Handlirsch 1906

Subfm. †Mylacrinae Scudder 1886

G. †Anomomylacris Handlirsch 1906

†Anomomylacris cubitalis Handlirsch 1906

G. †Neomylacris Handlirsch 1906

†Neomylacris major Handlirsch 1906

†Neomylacris minor Handlirsch 1906

†Neomylacris pulla Handlirsch 1906

Invalid names: Neomylacris paucinervis Handlirsch 1906 [synonym]

G. †Neosimplicius Carpenter 1934

†Neosimplicius medialis Carpenter 1934

G. †Mylacris Scudder 1868

†Mylacris abrupta Bolton 1930

Invalid names: Mylacris moriensis Copeland 1957 [synonym]

†Mylacris alutacea Handlirsch 1906

†Mylacris ampla Scudder 1895

†Mylacris analis Handlirsch 1906

†Mylacris angusta Scudder 1879

†Mylacris anthracophila Scudder 1868

Invalid names: Actinomylacris carbonum Scudder 1884 [synonym], Mylacridae pseudocarbonum Handlirsch 1906 [synonym], Mylacris elongata Scudder 1895 [synonym]

†Mylacris antiqua Scudder 1884

†Mylacris diplodiscus Packard 1885

†Mylacris dubia Handlirsch 1906

†Mylacris lapsa Cockerell 1927

†Mylacris lucifuga Scudder 1884

†Mylacris maior Handlirsch 1906

†Mylacris ovalis Scudder 1885

†Mylacris paradoxa Handlirsch 1906

†Mylacris pennsylvanica Scudder 1879

Invalid names: Mylacris priscovolans Scudder 1884 [synonym]

†Mylacris pulchra Handlirsch 1906

†Mylacris rugulosa Handlirsch 1906

†Mylacris sellardsi Handlirsch 1906

†Mylacris similis Carpenter 1934

†Mylacris truncata Handlirsch 1906

†Mylacris truncatula Handlirsch 1906

†Mylacris virginiana Handlirsch 1906

Invalid names: Actinomylacris Handlirsch 1906 [synonym], Chalepomylacris Handlirsch 1906 [synonym], Exochomylacris Handlirsch 1906 [synonym], Lithomylacris Scudder 1879 [synonym], Promylacris Scudder 1885 [synonym]

G. †Neorthroblattina Scudder 1885

†Neorthroblattina albolineata Scudder 1885

Invalid names: Mylacridium germari Schlechtendal 1906 [synonym]

†Neorthroblattina brongniarti Handlirsch 1906

†Neorthroblattina germari Schlechtendal 1906

†Neorthroblattina gracilis Handlirsch 1906

†Neorthroblattina multinervia Sellards 1904

Invalid names: Amorphoblatta Handlirsch 1906 [synonym], Idiomylacris Handlirsch 1906 [synonym], Schizoblattina Sellards 1904 [synonym]

G. †Opsiomylacris Haupt 1952

†Opsiomylacris densistriata Müller 1975

†Opsiomylacris elegans Müller 1975

†Opsiomylacris phyloblattoidea Scharf 1924

†Opsiomylacris postelegans Müller 1975

†Opsiomylacris posthumus Müller 1957

†Opsiomylacris preciosa Müller 1975

†Opsiomylacris procera Haupt 1952

†Opsiomylacris procerus Haupt 1952

†Opsiomylacris svitaviensis Schneider 1980

†Opsiomylacris thevenini Meunier 1912

†Paromylacris boulei commentryi Meunier 1921

Invalid names: Paromylacris boulei Meunier 1921 [synonym]

Invalid names: Opsiomylacris (Opsiomylacris) Haupt 1952 [invalid subgroup], Opsiomylacris (Posteriomylacris) Müller 1975 [invalid subgroup]

G. †Orthomylacris Handlirsch 1906

†Orthomylacris alutacea Handlirsch 1906

†Orthomylacris analis Handlirsch 1906

†Orthomylacris berryi Cockerell 1927

†Orthomylacris contorta Handlirsch 1911

†Orthomylacris cordiformis Handlirsch 1906

†Orthomylacris delicatula Bolton 1939

†Orthomylacris franklini Cockerell 1927

†Orthomylacris gurleyi Scudder 1895

†Orthomylacris hastata Bolton 1939

†Orthomylacris heeri Scudder 1875

†Orthomylacris mansfieldi Scudder 1879

†Orthomylacris mathieui Laurentiaux 1950

†Orthomylacris northi Bolton 1930

†Orthomylacris pauperata Scudder 1890

†Orthomylacris pennsylvaniae Handlirsch 1920

Invalid names: Orthomylacris pennsylvanica Handlirsch 1906 [replaced]

†Orthomylacris pittstoniana Scudder 1879

†Orthomylacris pluteus Scudder 1895

†Orthomylacris recta Cockerell 1927

†Orthomylacris rigida Scudder 1890

Invalid names: Phthinomylacris Handlirsch 1906 [synonym]

G. †Paromylacris Scudder 1885

†Paromylacris jacobsi Meunier 1907

†Paromylacris rotunda Scudder 1885

†Paromylacris thevenini Meunier 1912

G. †Platymylacris Handlirsch 1911

†Platymylacris paucinervis Handlirsch 1911

G. †Ptilomylacris Cockerell 1918

†Ptilomylacris medialis Cockerell 1918

G. †Rhodesiomylacris Zeuner 1955

†Rhodesiomylacris bondi Zeuner 1955

G. †Simplicius Handlirsch 1920

†Simplicius simplex Scudder 1879

G. †Sooblatta Handlirsch 1906

†Sooblatta ampla Waterlot 1934

†Sooblatta boltoniana Schneider 1983

Invalid names: Orthomylacris lanceolata Bolton 1911 [replaced]

†Sooblatta burri Bolton 1912

†Sooblatta deanensis Scudder 1895

Invalid names: Hemimylacris obtusa Bolton 1911 [synonym], Phylomylacris membranacea Bolton 1930 [synonym], Soomylacris celtica Bolton 1934 [synonym], Soomylacris stocki Bolton 1922 [synonym]

†Sooblatta emersoni Carpenter 1934

†Sooblatta jacobsi Meunier 1907

†Sooblatta lanceolata Sterzel 1881

†Sooblatta nodulata Bolton 1934

†Sooblatta ovata Wallis 1939

†Sooblatta stephanensis Laurentiaux 1950

†Sooblatta sterzeli Handlirsch 1909

†Sooblatta strahani Bolton 1930

†Sooblatta testudo Scudder 1890

†Sooblatta villeti Pruvost 1912

Invalid names: Anacoloblatta Handlirsch 1920 [synonym], Discomylacris Handlirsch 1920 [synonym], Soomylacris Handlirsch 1906 [synonym]

G. †Sooblattella Handlirsch 1920

†Sooblattella ater Santos et al. 2025

G. †Sphenomylacris Handlirsch 1906

†Sphenomylacris singularis Handlirsch 1906

Invalid names: Blattina bretonensis Scudder 1875 [nomen dubium], Neorthroblattinidae Handlirsch 1906 [synonym], Orthomylacrinae Durden 1969 [empty], Paromylacris ampla Scudder 1890 [nomen dubium]

Diagnosis

No diagnoses are available

Measurements

No measurements are available

Composition:

chitinc

Environment:

terrestrialc

Locomotion:

actively mobilep

Created:

2017-04-17 09:56:18

Modified:

2017-04-17 09:56:18

Source: c = class, p = phylum

References: Bush and Bambach 2015, Kiessling 2004

Age range: base of the Westphalian B to the top of the Norian or 316.90000 to 205.70000 Ma

Collections (114 total)

Time interval	Ma	Country or state	Original ID and collection number
Bashkirian	323.4 - 315.2	USA (Illinois)	Mylacris anthracophila (122575)
Westphalian	318.7 - 307.4	USA (Rhode Island)	Aphelomylacris modesta (112700)
Westphalian	318.7 - 307.4	USA (West Virginia)	Exochomylacris virginiana (125763)
Westphalian B	316.9 - 314.6	USA (Maryland)	Brachymylacris martini (124513)
Westphalian B	316.9 - 314.6	United Kingdom (Wales)	Mesitoblatta nodulata (151401)
Moscovian	315.2 - 307.0	USA (West Virginia)	Orthomylacris franklini (124499)
Moscovian	315.2 - 307.0	United Kingdom (England)	Etoblattina deanensis (97600 125696)
Moscovian	315.2 - 307.0	USA (Maryland)	Cyphomylacris atrata (124516) Loxoblatta bassleri (124498) Mylacris lapsa (124514) Orthomylacris berryi (124497) Orthomylacris recta (124515)
Westphalian C	314.6 - 309.8	Canada (Nova Scotia)	Acadiemylacris attenuata (216815) Amblymylacris acadica (216826) Amblymylacris orieulxi (155673) Amblymylacris sp., Archimylacris sp. 2 (155671) Aphelomylacris thorburnensis (216829) Brachymylacris belli (216804) Brachymylacris mclellanensis (216823) Brachymylacris mountvillensis (216828) Brachymylacris sp. (216803 216821) Hemimylacridae indet. (216806 216817 216822) Quasimylacris sp. (216816)
Westphalian C	314.6 - 309.8	France	Soomylacris lotharingiae (153152)
Westphalian C - Westphalian D	314.6 - 307.4	USA (Oklahoma)	Metachorus striolatus (125738)
Westphalian C - Westphalian D	314.6 - 307.4	USA (Pennsylvania)	Hemimylacris ramificata, Orthomylacris rugulosa, Orthomylacris elongata, Orthomylacris pennsylvanica, Anomomylacris cubitalis, Mylacris dubia, Neomylacris paucinervis, Idiomylacris gracilis, Neomylacris pulla (125764) Stenomylacris elegans, Chalepomylacris pulchra, Brachymylacris rotundata, Brachymylacris mixta, Goniomylacris pauper (114456)
Westphalian C - Westphalian D	314.6 - 307.4	France (Nord-Pas-de-Calais)	Soomylacris sp. (151695)
Westphalian C - Westphalian D	314.6 - 307.4	France	Orthomylacris sp. (151689)
Westphalian C - Westphalian D	314.6 - 307.4	Canada (Nova Scotia)	Blattina bretonensis, Blattina heeri (153634) Blattina sepulta (122607)
Westphalian D	309.8 - 307.4	United Kingdom (England)	Soomylacris burri (127544)
Westphalian D	309.8 - 307.4	Germany	Blattina lanceolata (123932)
Westphalian D	309.8 - 307.4	China (Hebei)	Sooblattella ater, Etomylacris straeleni (147001)
Westphalian D	309.8 - 307.4	France	Hemimylacris ampla (153151) Lithomylacris ataxica (155439) Mylacridae indet. a (229657) Phylomylacris villeti, Barroisiblatta orieulxi, Soomylacris lievinensis, Lithomylacris gallica (155432) Soomylacris deanensis, Phylomylacris villeti (155431)
Westphalian D	309.8 - 307.4	USA (Missouri)	Etoblattina clintoniana (124242) Paromylacris clintoniana (125697)
Westphalian D	309.8 - 307.4	United Kingdom (Wales)	Asemoblatta ovata (162201) Hemimylacris obtusa (97599) Orthomylacris lanceolata (127543) Phylomylacris abrupta, Phylomylacris villeti (151389) Phylomylacris membranacea (151390) Soomylacris northi (151388) Soomylacris obesa, Orthomylacris delicatula (162202) Soomylacris obesa, Orthomylacris hastata (162203) Soomylacris strahani (127292)
Westphalian D	309.8 - 307.4	United Kingdom (Gloucestershire)	Drybrookia cubitalis (151382)
Westphalian D	309.8 - 307.4	USA (Illinois)	Lithomylacris simplex (122522) Mylacris mansfieldi (122524) Mylacris similis (146857) Orthomylacris contorta, Platymylacris paucinervis, Mylacris diplodiscus, Mylacris elongata (112630) Paromylacris rotundum, Dipeltis diplodiscus, Mylacris elongata, Promylacris rigida, Paromylacris ampla, Mylacris antiquum, Mylacris ampla (21981) Promylacris ovale, Mylacridae indet., Mylacris gurleyi (122521)
Westphalian D	309.8 - 307.4	USA (Pennsylvania)	Hemimylacrella mammothi, Actinomylacris similis (124504) Lithomylacris angustum, Lithomylacris pittstonianum, Lithomylacris panperata, Orthomylacris analis, Orthomylacris truncatula, Phthinomylacris cordiformis, Phthinomylacris medialis, Neomylacris major, Sphenomylacris singularis (122525) Mylacris carbonum (125240) Mylacris lucifugum, Orthomylacris alutacea (125766) Mylacris pennsylvanicum, Mylacris mansfieldii, Mylacris priscovolans, Mylacris carbonum, Mylacris ovale, M. pseudocarbonum (117474) Neosimplicius medialis (155384) Paromylacris pluteus (125698) Stenomylacris sp., Brachymylacris bassleri, Ptilomylacris medialis (140162)
Westphalian D	309.8 - 307.4	Canada (Nova Scotia)	Archimylacris sp. (216833) Phyloblatta sp., Archimylacris sp. 2 (216831) Pinnamylacris elongata, Amblymylacris hendersoniana, Phyloblatta sp. (216834)
Westphalian D	309.8 - 307.4	France (Nord-Pas-de-Calais)	Hemimylacris saclieri (151692) Stenomylacris montagnei (151696)
Westphalian D	309.8 - 307.4	United Kingdom	Soomylacris celtica (151403) Soomylacris truncata (151402)
Stephanian	307.4 - 300.3	USA (Missouri)	Promylacris harei (123813)
Stephanian	307.4 - 300.3	USA (Pennsylvania)	Brachymylacris elongata, Brachymylacris cordata (125960)
Kasimovian	307.0 - 303.7	USA (Kansas)	Schizoblattina multinervia (113003 147044 147045)
Stephanian A	305.0 - 301.4	France	Hemimylacris stephanensis (156705) Orthomylacris mathieui (156707)
Gzhelian	303.7 - 298.9	Russian Federation	Hemimylacrella leptophlebiopsis (124586)
Gzhelian	303.7 - 298.9	France	Amorphoblatta brongniarti, Mesitoblatta brongniarti, Dictyomylacris insignis, Dictyomylacris poiraulti (103635) Dictyomylacris poiraulti, Dictyomylacris jacobsi, Paromylacris thevenini, Paromylacris boulei, Promylacris brongniarti, Lithomylacris elegantula, Anthracoblattina brongniarti, Etoblattina minuscula, Etoblattina perturbata, Dictyomylacris analis, Dictyomylacris angustior, Dictyomylacris medialis, Dictyomylacris subcostalis (121979)
Stephanian B	301.4 - 300.9	Morocco	Opsiomylacris thevenini (127454 155288 155289)
Stephanian B	301.4 - 300.9	France	Orthomylacris sp. (156710) Soomylacris flexuosus (172760)
Stephanian C	300.9 - 300.3	Portugal	Stephanomylacris sp., Stephanomylacris duriensis, Stephanomylacris zbyszewskii, Lusitanomylacris pruvosti (152394)
Stephanian C	300.9 - 300.3	Germany	Opsiomylacris densistriata (128415)
Stephanian C	300.9 - 300.3	Germany (Saxony-Anhalt)	Mylacridium germari, Mylacridium handlirschi, Mylacridium berlichi, Mylacridium longulum, Mylacridium goldenbergi, Mylacridium jucundum, Mylacridium superbum, Mylacridium planum, Mylacridium brongniarti, Mylacridium pulcrum, Mylacridium berlichianum, Mylacridium incertum, Mylacridium depressum, Mylacridium gracile, Mylacridium diversum, Blattoidea sp. (122578) Mylacridium schroeteri (122579) Opsiomylacris densistriata (125736)
Asselian	298.9 - 293.52	Czechia	Moravamylacris kukalovae, Opsiomylacris sp., Opsiomylacris svitaviensis (114186) Moravamylacris ricanyensis (114141) Moravamylacris sp 1, Opsiomylacris svitaviensis (133680) Opsiomylacris procera (114119) Opsiomylacris sp., Opsiomylacris svitaviensis (133681)
Asselian	298.9 - 293.52	USA (Colorado)	Neorthroblattina albolineata (106345)
Asselian	298.9 - 293.52	Germany (Thüringer Wald)	Opsiomylacris elegans (164695) Opsiomylacris preciosa (164694) Opsiomylacris proceriformis (164693) Opsiomylacris procerus (128485)
Asselian - Sakmarian	298.9 - 290.1	Germany (Thuringia)	Nearoblatta phyloblattoidea (128477)
Sakmarian	293.52 - 290.1	Germany (Thüringer Wald)	Opsiomylacris postelegans (164696) Opsiomylacris posthumus (160132)
Sakmarian	293.52 - 290.1	China (Shanxi)	Shanxiblatta suni, Shanxiblatta striata (140455)
Artinskian	290.1 - 283.3	Germany (Thuringia)	Moravamylacris kukalovae, Opsiomylacris sp. (80112)
Wuchiapingian - Changhsingian	259.51 - 251.902	Zimbabwe (Sebungu)	Rhodesiomylacris bondi (116117)
Longobardian	239.48 - 237.0	China (Shaanxi)	Cathayiblatta longata (117138)
Norian	227.3 - 205.7	Australia (Queensland)	Austromylacrites latus (111777)