Flatstones, Stonebarrow, Charmouth (Jackson collection) (Jurassic of the United Kingdom)

Where: England, United Kingdom (50.7° N, 2.9° W: paleocoordinates 37.4° N, 3.9° E)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Obtusum (196.5 - 189.6 Ma)

Environment/lithology: marine; lithified, calcareous mudstone

• "The calcareous mudstone in which the insects are preserved varies in fineness and is frequently full of burrows…" Whalley, 1985

Size classes: macrofossils, mesofossils

Preservation: mold/impression, adpression, concretion

Collected by J. F. Jackson in 1951-1953; reposited in the BMNH

• Repository: National Museum of Wales, Cardiff

Primary reference: F. E. Zeuner. 1962. Fossil insects from the Lower Lias of Charmouth, Dorset. Bulletin of the British Museum (Natural History), Geology 7:155-171 [M. Clapham/J. Karr/M. Clapham]more details

Purpose of describing collection: general faunal/floral analysis

PaleoDB collection 114638: authorized by Matthew Clapham, entered by Jered Karr on 18.08.2011, edited by Lindy Edwards and Matthew Clapham

Creative Commons license: CC BY (attribution)

Taxonomic list

• The following ammonites occur in the deposit according to Jackson Asteroceras obtusum, Xipheroceras dudressieri, Xipheroceras sp. Promicroceras planicosta.

•Fish Dapedium grandulatum, Pholidophorus sp., Chondrosteus sp.

•Lamellibranchs are rare except Inoceramus

•No gastropods

•Some plants including driftwood

Show authors, comments, and common names
Cephalopoda
 Loligosepiida - Loligosepiidae
Loligosepia bucklandi1
 Ammonitida - Asteroceratidae
Asteroceras obtusum5
Asteroceras obtusum5 ammonite
on top of Liassophlebia anglicanopsis
Insecta
 Dicondylia -
Odonata indet.
Odonata indet. Fabricius 1793 dragonfly
BMNH In 49247, 59109
 Odonata - Liassophlebiidae
"Liassophlebia jacksoni n. sp." = Rossiphlebia jacksoni, Liassophlebia sp., Liassophlebia pseudomagnifica n. sp.5
"Liassophlebia jacksoni n. sp." = Rossiphlebia jacksoni Zeuner 1962 damsel-dragonflies
BMNH In 53999
Liassophlebia sp. Tillyard 1925 damsel-dragonflies
BMNH In 53972
Liassophlebia pseudomagnifica n. sp.5 Whalley 1985 damsel-dragonflies
 Odonata - Heterophlebiidae
Heterophlebia sp.5
Heterophlebia sp.5 Westwood 1849 dragonfly
BMNH In 49246
 Odonata - Campterophlebiidae
Hypsothemis fraseri n. sp.5, "Petrophlebia anglicanopsis n. sp." = Lateophlebia anglicanopsis, Dorsettia laeta n. gen. n. sp.5
Hypsothemis fraseri n. sp.5 Whalley 1985 dragonfly
BMNH In 59106; Zeuner, 1962 called specimen L. magnifica; BMNH In 59109
"Petrophlebia anglicanopsis n. sp." = Lateophlebia anglicanopsis Zeuner 1962 dragonfly
BMNH In 49573, 59376
Dorsettia laeta n. gen. n. sp.5 Whalley 1985 dragonfly
BMNH In 59375
 Hemiptera - Tettigarctidae
Paraprosbole rotruda n. gen. n. sp.5
Paraprosbole rotruda n. gen. n. sp.5 Whalley 1985 hairy cicada
BMNH In 59374, 48162, 64395
 Hemiptera - Corixidae
Liassocorixa dorsetica n. gen. n. sp.4
Liassocorixa dorsetica n. gen. n. sp.4 Popov et al. 1994 water boatman
BMNH In 59140
 Hemiptera - Pterocimicidae
Pterocimex jacksoni4
Pterocimex jacksoni4 Popov et al. 1994 true bug
BMNH In 49216...
 Hemiptera - Belostomatidae
Lethonectes naucoroides n. gen. n. sp.4
Lethonectes naucoroides n. gen. n. sp.4 Popov et al. 1994 giant water bug
BMNH In 49615, 51014(59383)
 Hemiptera - Pachymeridiidae
Pachymeridiidae "sp. 1"4, Pachymeridiidae "sp. 2"4, Pachymeridiidae "sp. 3"4, Neomeridium trifurcum4
Pachymeridiidae "sp. 1"4 Handlirsch 1906 true bug
BMNH In 51028
Pachymeridiidae "sp. 2"4 Handlirsch 1906 true bug
BMNH In 51005
Pachymeridiidae "sp. 3"4 Handlirsch 1906 true bug
BMNH In 50999
Neomeridium trifurcum4 Popov et al. 1994 true bug
Whalley says specimens are a new genus & family
 Hemiptera - Fulgoridiidae
? Mesocixiella fennahi n. sp.5
? Mesocixiella fennahi n. sp.5 Whalley 1985 planthopper
BMNH In 53942
 Dicondylia - Aerophasmidae
Durnovaria parallela n. gen. n. sp.5
Durnovaria parallela n. gen. n. sp.5 Whalley 1985 winged insect
BMNH In 59171
 Orthoptera - Haglidae
Protohagla langi n. gen. n. sp.
Protohagla langi n. gen. n. sp. Zeuner 1962 hump-winged cricket
BMNH In 59018
 Mecoptera - Orthophlebiidae
Orthophlebia capillata n. sp.5
Orthophlebia capillata n. sp.5 Whalley 1985 scorpionfly
BMNH In 53924, 49579, 49601, 53899, 59380
 Coleoptera - Coptoclavidae
"Holcoelytrum giebeli" = Holcoptera giebeli, Holcoptera alisonae n. sp.2
"Holcoelytrum giebeli" = Holcoptera giebeli Handlirsch 1906 beetle
BMNH In. 49244, 59117, 3981, 53989, 49227, 64009, 3985, 49611, 64013, 53937, 49229,49616, 51002, 49204, 64012, 49570, 59141, 4963, 53928, 59153, 49228, 49239, 59129, 59145, 53962, 64010, 53974, 59148, 64011, 49610, 49219, 59138, 59149, 49618; NMW 58.552.G1, 65.510.G164, 65.510.G53, 65.510.G538
Holcoptera alisonae n. sp.2 Kelly et al. 2017 beetle
BMNH In 59115, 53990
 Coleoptera - Ommatidae
"? Liassocupes maculatus n. sp." = Brochocoleus maculatus5
"? Liassocupes maculatus n. sp." = Brochocoleus maculatus5 Whalley 1985 beetle
BMNH In 49577, 59133, 59361, 59154
 Coleoptera - Schizocoleidae
"? Liassocupes giganteus n. sp." = Mimemala giganteum5
"? Liassocupes giganteus n. sp." = Mimemala giganteum5 Whalley 1985 beetle
BMNH In 51026
 Coleoptera - Phoroschizidae
Tersus crowsoni n. sp.3
Tersus crowsoni n. sp.3 Ponomarenko 2006 beetle
BMNH In 53949, 59038 (part of Liassocupes maculatus by Whalley, 1985)
 Diptera - Ptychopteridae
"Prodocidia spectra n. gen. n. sp." = Eoptychoptera spectra5
"Prodocidia spectra n. gen. n. sp." = Eoptychoptera spectra5 Whalley 1985 phantom crane fly
BMNH In 49226
1Donovan and von Boletzky 2014; 2Kelly et al. 2017; 3Ponomarenko 2006; 4Popov et al. 1994; 5Whalley 1985